TRANSFORMERS TF-T21 Ear Mounted BT Headset User Manual

May 15, 2024
TRANSFORMERS

TRANSFORMERS LOGO TF-T21 Ear Mounted BT Headset
User Manual TF-T21 ear mounted BT headset

Packing list

| Headphones2
---|---
| Type-C Charging cable
1
| Charging case 1
| Instructions and Warranty card
1

Product diagram

Tips

  1. Except for the operation methods specifically marked in the manual, please do not try to disassemble or replace any parts in the earbuds.
  2. Don’ t put the earbuds in the water or any others liquid. The earbuds are not waterproof.
  3. If any liquid enters the product by accidentally, please disconnect and remove the connection immediately.
  4. Please make sure that there is no water on your hands when Installing or uninstalling the product to avoid electricshock.
  5. Do not it to the fire source put the directly.
  6. Do not product near by put the product the heat source or expose in the environment with strong electromag­ netic force, otherwise it will cause product malfunction.

Product specification

BT version: V5.4
Transmission distance: ≥10m
Speaker unit: Φ16.2mm
Horn resistance: 20Ω
Frequency response range: 20HZ~20kKHz
Transmission frequency: 2.402-2.48G
Standby time: ≈240 hours
Music playing time: ≈6 hours
Charging time (charging case) : <2 hours
Battery capacity (charging case) : 300mAh
Battery capacity (headset) : 7OmAh

Product operation instructions

  1. Boot:
    Method 1. Open the top cover of the charging case, and the headset will turn on automatically. Method 2. Hold down the left/right multi-function button for 3 seconds, and keep the white indicator on for 1 second. (Voice prompt tone: “Power on”)

  2.  Shutdown:
    Method 1. Put back the charging case, close the upper cover, the earphone automatically shuts down and charges, and the red light is steady on. Method

  3. If the device is not connected, the device automatically shuts down after 3 minutes. The red light is on for 1 second and then the device is off.

  4.  BT pairing:
    1. Open the charging compartment, and the left and right earphones automatically enter the BT pairing mode, waiting for connection. (Audio notification tone: “pairing”)
    2. Turn on BT on the mobile phone, search the device name “TF-T21”, and click to enter the connection. (Voice prompt tone: “connected”)

Enter the device pairing state: the red and white light of the main ear blinks alternately, and the secondary ear ight turns off

Wearing method

  1. Hold the ear with one hand and hang the earphones over your ears.
  2. Rotate and adjust the horn position of the earphone, moving it up and down until the earphone completely fits the outline of the ear.
  3. Pay attention to distinguish the wearing position of L/R, if it is reversed, it cannot be worn up.

LED indicator status

Power on The white light stays on for 1 second
Power Off The red light stays on for 1 second
TWS pairing status The red and white lights on the left and right earphones

are blinking alternately
The device pairing status is displayed| The main ear light flashes red and white alternately, and the secondary ear light is off
disconnect| The red and white lights in the main ear flash alternately, and the secondary ear is turned off
Earphone low battery warning| The headset is blinking red
Earphone charging| The red light remains on during charging and goes out when fully charged
Charging chamber charging| Flashing red light, always on when full of red light
Charging bin discharging| White light always on
Charging bay low power| White light flashing
Delete match| Keep the red light on for 1 second

Touch operation

  • General mode
  • Music playback mode
  • Call mode
  • Game/ Music mode switch

Restore factory settings

BT power-on is not connected, 5 clicks to clear the pairing information with the device and automatically shut down, the red light is on for 1 second and then it s off (voice prompt tone: “power off”).

The name and content of harmful substances m the earbuds

Part Names Harmful Substances
Pb Hg
Printed circuit assembly 0
Small structural parts such as shell 0

This form is compiled in accordance with SJ/T 11364.
0:Indicates that the content of the hazardous substance in all homogeneous materials of the part is in below the limit required by GB/T 26572.
X:Indicates that the hazardous substance at least in a certain homogeneous material of the part exceeds The limit requirements specified in GB/T 26572.
The parts marked with “X” on the form are all harmful due to the limitations of global technological development. Substitution of substances.
Printed circuit board components:
Including printed circuit boards and their parts, electronic components, etc. and depending on the product model, the earbuds you purchased may not contain all the above components.
| Electronic and electrical products sold in the People’ s Republic of China must mark this LOGO, the number in the logo represents the product under normal use Environmental protection use period.

Warranty statement

Disclaimer
This user manual does not have any form of guarantee, position expression or other implication. The mentioned products, specifications and information are for reference only ,and the content will also be updated on the web at any time
without additional separate notice
Warranty statement:
The product attached to this document is guaranteed as follows: If the product is twelve (12) months from the date of purchase(“Warranty Period”),under normal conditions of use due to quality defects damaged, can be repaired. Free repair: free replacement if the manufacturer confirms that it cannot be repaired;
repaired or replaced product. Continue to enjoy the warranty during the remaining warranty period (the shortest not less than 30 days).Purchased by sale the ticket date shall prevail! the purchase date cannot be determined, the warranty period shall be 13 (13) months
If you apply for a warranty ,please call the product service hotline first and execute it in the manner instructed by us. When applying for warranty, you need to provide an accurate, complete and clearly filled out valid sales invoice.
The above guarantee does not apply to the following situations:

  1. Exceeding the validity period of the three packs;
  2. Altering the warranty card and product code does not match the product body;
  3. Causes caused by misuse, abuse or improper transportation, use, maintenance or storage obstacles or damage;
  4. Failure or damage caused by force majeure (such as earthquake, war, disaster, etc.) or accident bad;
  5. The zipper and tower buckle are damaged due to excessive force;
  6. Disconnection or tearing caused by excessive load;
  7. Any damage caused by sharp objects;
  8. Products with signs of burning of flooding,
  9. Damage caused by unauthorized disassembly;
  10. Aging, discoloration, abrasion, rupture and other losses that occur during the normal use of the product.
  11. If the original identification label of the product is changed or damaged, this guarantee will become invalid.

The completeness and appearance of the product and accompanying materials are not within the scope of the guarantee. You should check on the spot and raise objections to any discrepancies.
The above guarantees are all guarantees we make regarding the products, and are only applicable in mainland China. Nothing in this document affects consumer rights that cannot be excluded or restricted under the law profit.
Service supervision hotline: 400-885-8808

Warranty Service

Dear user, this warranty card is the proof of your future warranty application, please cooperate with the seller to fill it out and keep it for future use!

User info

User name| | Email
Mailing address| | Postal code
Contact number| |
Product information
Product name| | Product number
Product barcode / Serial number / Batch number
Vendor information

Name|
Address|
Contact number| Postal code
Sales date| Invoice number
Remark|

FCC Warnning:
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 againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference 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 equipmentoff 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.

Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment.
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.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.TRANSFORMERS
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