Wiitech KH136K TV Bluetooth Headphones User Manual

June 14, 2024
Wiitech

Ensemble

User Manual

Model No: KH136K
1. Package Contents

A. KH136K TV Bluetooth Headphones x 1
B. Bluetooth Transmitter & Charging Base x 1
C. Aux 3.5mm to RCA Cable x 1
D. Type-C USB Charging Cable x 1
E. Optical Cable x 1
F. 3.5mm AUX Cable x 1
G. User Manual x 1

( A )

( B )                    ( C )                      ( D )

( E )                   ( F )                      ( G )

2. Product Overview

SPDIF: Optic cable access
Battery: Headphones power
Pairing: Pairing
AUX: AUX cable access

3. Basic Operation
3.1 Basic Headphone Operation

Button

|

Function

| Operation Instruction
---|---|---

MFB

|

Power On

| With device in off status, long press for 4 seconds to power on.

Power Off

| With device in in on status, long press for 4 seconds to power off.

Enter Pairing Mode

| A. With device in on status, double press the MFB to enter pairing mode B. In 2.4G mode, when the headphones are connected to the base, this operation will not disconnect from the base while being paired.

Play / Pause

| Short press when a song is selected.

Answer a call

| When you have an incoming call, short press to answer.

Hang up a call

| During a call, short press to hang up.

Reject a call

| When you have an incoming call, long press for 1 second to reject a call.

Three-way calling function

|

  1. For an incoming call coming during a current call, short press the MFB to answer the new call and hang up the current call.
  2. For an incoming call coming during a current call, double press the MFB to answer the new call and keep the current call.
  3. For an incoming call coming during a current call, long press the MFB for 1-2 seconds to reject the new call. When you are on a three-party call, double press the MFB to switch audio between the current call and the held call, single press to hang up.

Volume +

|

Volume Up

| Short press.

Next Song

| Long press for 1 second. (In BT Mode)

Volume –

|

Volume Down

| Short press.

Previous Song

| Long press for 1 second. (In BT Mode)

Microphone Mute Button

|

Microphone Mute

| During a call, click to mute.

Combine Button

|

Voice Dialing

| Press Volume+ and Volume- at the same time.

2.4G / BT Mode

| In 2.4G Mode: When the headphones and base are successfully paired, double-click on the MFB of the headphones twice to enter the pairing state. Open the phone’s Bluetooth, click on “KH136K”, and the connection will be successful.
However, music and audio can only be output through the base. When a mobile phone (HFP) is connected, it is switched to the mobile phone call end. The Base music output will be suspended, and the base will be disconnected from the headphones. After the call is hung up, the base will be reconnected with the headphones, music recovery.
In BT Mode: Headphones cannot be connected to the base, but can only be connected to a mobile phone. At this time, music can be output through the mobile phone.

Delete Paired Records

| With device in the on-state (no calls), long press the Volume+ and Volume- Button for 4 seconds to clear the pairing records. After deleting, the KH136K will enter pairing mode.

3.2 Basic Base Operation

Button

|

Function

| Operation Instruction
---|---|---

MFB

|

Enter Pairing Records

| In the reconnection state, long press the “multi-function button” for 5s to enter the pairing state.

Delete Paired Records

| When the base is in the pairing state, double-click the MFB to clear the binding record.

Power Button

|

Power on

| Insert the charging cable and switch to on.

Power off

| Unplug the charging cable, or switch to off.

NOTE:
The base can only be paired with KH136K headphones, and cannot be paired with other headphones.

4. Setup
4.1 Connecting the Transmitter Base to Your TV

The transmitter base must be connected to a power source in order to function. Connect it to a nearby wall outlet via the USB adapter and provided power cable. Once the transmitter base is connected to its power source, you can connect it to your TV’s audio ports. You can choose one of 3 different ways to do this:

OPTION 1 – Optical Port(recommended)

Plug the provided optical audio cable into the TV’s DIGITAL AUDIO OUT (OPTICAL) port, then plug the other end into the transmitter’s optical port. (Before use, please remove the protective covers from both ends)

NOTE: Most TVs support audio output through only one digital output port at a time, so if your TV’s HDMI ARC port is in use, the optical port may be disabled. You can either unplug the HDMI ARC or try connecting the transmitter via RCA/AUX.

OPTION 2 – AUX 3.5mm Port

Plug the provided AUX 3.5mm audio cable into the TV’s AUX 3.5mm output port, then plug the other end into the transmitter’s AUX 3.5mm port.

OPTION 3 – RCA Port

Connect the provided RCA adapter to the AUX 3.5mm audio cable. Plug the red & white RCA connectors into the TV’s “AUDIO OUT” ports, then plug the other end into the transmitter’s AUX 3.5mm port.

4.2 Connecting the Headphones to the Transmitter Base

STEP 1
On your headphones, set the headphones to 2.4G mode, the long press the MFB button for 4 seconds to power on. The LED indicator should start flashing red & blue.

STEP 2
The transmitter is ON by default. If not, slide its OFF/ON switch to the ON position. The paired light “ ” of the LED display will flash.

STEP 3
Keep the headphones close to the transmitter base; they should connect within 3-5 seconds. Once connected, the headphones’ LED indicators will turn solid blue. The paired light of the LED display on the transmitter base is always on white.

4.3 Setting Up Your TV (for optical connections only)

If you have connected to your TV via the optical OUT or “OPT OUT” port, you’ll need to configure your TV settings before you’ll receive audio.

STEP 1
Using your TV’s remote control, press the SETTINGS button and navigate to the AUDIO tab within the settings menu.(Please note that there may be differences in the setting names depending on your brand of TV).

STEP 2
Proceed to AUDIO OUTPUT and select “ OPTICAL OUT /DIGITAL OUT “. Many TVs will do this automatically; skip this step as needed.

STEP 3
Set Audio Output format to “ PCM / STEREO ” ON or “ DOLBY ” OFF. If you’re having trouble finding these settings, you can contact us at:

Email:help@iswiitech.com      Facebook: @Swiitech

NOTES

  1. Some smart TVs automatically reset their settings after system updates.
    Make sure your audio output / input format is set to “ PCM ” and NOT “ AUTO ” or “ DOLBY.”

  2. When using Netflix or Amazon Prime, you may need to start the movie / show before changing the audio settings to “ PCM.”

5. LED Indicator
5.1 Headphone Indicator
Status LED Indicator
Power on Blue LED is on for 1 second
Power off Red LED is on for 1 second
Pairing Blue and Red LED flash alternately
Reconnect Blue LED flash once every 2 seconds
Unconnected Standby Mode Blue LED flash once every 6 seconds
Connected Standby Mode Solid Blue LED
Playing Music Solid Blue LED
Talking Mode Solid Blue LED
Delete Paired Records Red and Blue LED is on for 2 seconds at the same time
Charging Solid Red LED
Full charged Red LED turn off
Low battery Red LED flash once every 10 seconds
5.2 Base Indicator Status

| Status| LED Indicator
---|---|---
| Insert Optical Interface| Solid White LED
| Charging| white LED shows charging progress
Full Charged| All four grids of the white light are on
| Pairing| White LED flashes
Reconnect| White LED flashes once every 2 seconds
Delete Paired Records| White LED is on for 5 seconds, then flashes quickly
Connected standby mode| Solid White LED
| Insert AUX Interface| Solid White LED

6. Charging
6.1 Headphone Charging

Please charge the KH136K at once when the Red LED flash once every 10 seconds. Charging time about 2 hours. Red LED turn off when full charged.
Connection for charging:
Plug one end of Type-C USB cable to KH136K, another end to USB charger (Car charger, power bank or PC etc)

NOTES

  1. Please charge the item at least once for every 2 months when without use.
  2. Charge with power on. It is normal for the Bluetooth indicator to overlap with the charge indicator.
6.2 Base Charging
  1. The Base should be connected to the TYPE-C end of the charging cable.
    The other end, the standard USB port, should connect to a charging source (car charger, travel charger, computer USB, etc).

  2. Place the headphones on the charging dock in order to charge. When the four-bars of the LED battery display are lit, the headphones are fully charged.

When the headphones and the base are successfully paired, the LED display of the base shows the current battery level of the headphones.

NOTES

  1. In the boot state, when the headphones are put into the base for charging, both the headphones and the base will automatically shut down, and when the headphones are removed, they will automatically turn on.
  2. The KH136K charging base has no built-in battery, so when charging the headphones or using it as a transmitter, it will need to be connected to a power supply.
7. Product Specification
7.1 Headphones Specifications
Bluetooth Version V5.3
Frequency Domain 2.402-2.480GHz
Bluetooth Chipset 2831PL
Operation Range 10 meters
Bluetooth Profile A2DP AVRCP HFP
CODEC AAC SBC
Battery Capacity 600mAh/3.7V
Charging Time About 2 hours
Standby Time About 600 hours
Working Time About 25 hours (70% Volume) The actual use time will be

different according to the ambient environment and music style.
headphones Net Weight| About 240g
headphones Dimension| 201.2178.384mm
Work Temperature| -10 – 55°C

7.2.Base Specifications:
Bluetooth Version V5.3
Frequency Domain 2.402-2.480GHz
Bluetooth Profile A2DP AVRCP
Bluetooth Chipset 2831PL
Operation Range Indoor barrier free 10 meters
CODEC SBC
Net Weight About 210g
Dimension 178.398.343.5mm
Work Temperature -10 – 55°C
8. Advanced Features
8.1 Using the Headphones with Your Phone/Tablet

A. First, switch the headphones to BT mode. In the on-state, double press MFB to enter pairing mode, the Red and Blue LED flash alternately.
B. Search and click to connect “KH136K” on your phone Bluetooth list, the LED will turn to solid Blue after it is connected.
C. Control answering/hanging up a call, music play/pause, previous/next song, volume up/down, etc, through the MFB /Volume +/Volume- buttons.

8.2 Binding and Replacement Functions

The headphones and base have been bound together at the factory. Once the binding is successful, the base and the headphones can be automatically connected to each other without any extra operation after they are turned on. If you need to bind the base to another KH136K prototype, you can use the following operations to unbind the original headphones and bind it to the new headphones.

A. Clear the base: When the base is switched on and in a reconnection state, press the multi-function button for a long time to enter matching, then double-click the multi-function button while in the matching state. At this time, the matching white light will be on for 5 seconds, then flash after the base connection has been cleared successfully.

B. Base and headphone pairing: After the base is cleared successfully, it will automatically enter the pairing state. Turn on the KH136K headphones that need to be bound and enter pairing mode. The base and headphones will be automatically paired and connected.

C. Base binding: After the base is successfully connected with the KH136K prototype, the white matching light of the base will be solidly on and the light of the headphones will be solidly on. At this time, double-click the multifunction button of the base, and the matching white light of the base will flash 5 times, which indicates that the binding operation has been successful. After the operation is completed, the base will be unbound from the original KH136K headphones, and bound to the new KH136K headphones.

Note:
It is recommended not to often use this binding operation. Unbind and rebind the KH136K headphones only when the KH136K headphones are damaged and another KH136K headphone is needed to replace them. When successfully bound, the headphone and base connect quickly, but rebinding a previously used set of headphones is not always successful. It is recommended that the replaced headset not be used again after unbinding.

8.3 Wired Connection

Plug one end of the 3.5 mm cable into the 3.5 mm AUX interface of the headphones. Plug the other end into a phone or PC audio port.

3.5 mm AUX cable                3.5 mm AUX cable

Note:
If the audio cable is inserted in the boot state, it will automatically shut down.
After the audio cable is unplugged, the headphones need to be restarted.

8.4 2.4G/BT Mode

You can switch between 2.4G and BT modes

In 2.4G Mode: When the headphones and base are successfully paired, double-click on the MFB of the headphones twice to enter the pairing state. Open the phone’s Bluetooth, click on “KH136K”, and the connection will be successful.
However, music and audio can only be output through the base. When a mobile phone (HFP) is connected, it is switched to the mobile phone call end. The Base music output will be suspended, and the base will be disconnected from the headphones. After the call is hung up, the base will be reconnected with the headphones, music recovery.

In BT Mode: Headphones cannot be connected to the base, but can only be connected to a mobile phone. At this time, music can be output through the mobile phone.

9. Attention and Q & A
9.1 Q&A About Headphones

Q: What a if headphones fail to reconnect?
A: After the headphones are successfully connected, they will automatically reconnect back to the previous device every time they are turned on. If they cannot be connected, please repeat the connection process. When the distance between the headphones and the connected equipment is beyond the effective range, the connection will be lost and the blue reconnection light will flash once every 2 seconds. After 10 minutes of not finding a connection, the device will automatically shut down.

Q: How do I delete paired records?
A: Turn power on. Long press Volume+ & Volume- for 4 seconds at the same time to delete paired records. After clearing, the KH136K will no longer automatically connect to the previously connected devices.
When various connection exceptions occur, you can try to clear the pairing record and reconnect.

Q: What’s the password for pairing?
A: Some devices require password for pairing, please try 0000 (four zero), 8888 (four eight), 1111 (four one) or 1234 ( one two three four).

Q: Which devices can I use to charge the headphones?
A: Any car charger, power bank, PC, etc, which provide 5 volts DC, with a charging current more than 500mA can be used to charge this item. Ideally, use the KH136K Charging Base.

Q: What if there are power or connection issues?
A: You can try to reset the charging process: In the power-on state, insert the charging cable or put headphones on the base to reset. Unplug headphones or remove from base to reset. If the device still cannot be used normally, you can seek technical support from customer service or the manufacturer.

Q: Why do the headphones power off automatically?
A: KH136K will power off if it is on standby mode for over 10 minutes, or if the battery voltage is less than 3.3V.

9.2 Q&A About Base

Q: How does the connection work?
A: 1.When the device is not bound with a matching record, KH136K will automatically connect to the last connected device (but only one device can be connected at a time) every time the device is turned on.
2. When the headphones have a pairing record and are bound to the device, KH136K will automatically connect to the connected headphones every time it is turned on (if you need to connect to a new device, you need to re-operate the pairing).

Q: How do I clear the pairing list?
A: When the device is in the pairing state, double-click the “multi-function button” to clear all connected device information (including the bound device information). After clearing the pairing record, the pairing status is entered.

Q: How to select the SPDIF/AUX mode?
A: By default, the boot status is optical fiber mode. When the AUX audio cable is inserted, it is automatically switched to AUX mode.

Q: How do you charge the base?
A: There is no battery inside the base, so it needs to be connected to a power supply.

Q. What should I do if a function exception occurs?
A. You can try to shut down and restart, clear the pairing and reconnect. If there are still problems, you can seek technical support from the manufacturer.

For answers to questions like these and for a full FAQ list, you can contact us directly for additional assistance. Email:help@iswiitech.com

FCC£

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.
The device has been evaluated to meet general RF exposure requirement.
The device can be used in portable exposure condition without restriction

Need any help?
We’re happy to assist you whenever you need us.
Email us at:help@iswiitech.com
We’re both the seller and manufacturer and can help you solve the problem at the fastest speed to save you some headaches!

MADE IN CHINA
FCC ID: 2A6Y3-KH136K

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