Stronics J90 Pro True Wireless Bluetooth Earbuds User Guide

Stronics J90 Pro True Wireless Bluetooth Earbuds

Product Information

The J90 Pro is a wireless earbud device that complies with part 15 of the FCC Rules. It is designed to provide a high-quality audio experience with support for HFP, A2DP, HSP, and AVRCP Bluetooth profiles. The earbuds feature a Type-C charging port and come with a charging case that can provide up to 6-8 hours of playback time for the earbuds and over 30 hours of additional battery life. The device has a transmission range of up to 15 meters without obstacles. It is equipped with LED indicators, a multifunction
button (MFB), and a microphone for call handling and music control.

Product Usage Instructions

To use the J90 Pro, follow these steps:

1. Ensure that the distance between the user and the antenna is no less than 30mm to comply with RF exposure requirements.
2. Charge the earbuds and the charging case using the provided Type-C charging cable. It takes approximately 1.5 hours to fully charge both the earbuds and the case.
3. Pairing:
   • Go to the Bluetooth settings on your device (e.g., smartphone) and enable Bluetooth.
   • Select “J90 Pro” from the list of available devices to pair.
   • If prompted, enter the necessary passcode or confirm the pairing request on your device.
4. Once paired, the earbuds will automatically connect to your device when within the transmission range (15 meters without obstacles).
5. To answer a call, tap the multifunction button (MFB) once. To hang up, press and hold the MFB for 2 seconds. To refuse an incoming call, press and hold the MFB for 2 seconds.
6. To control music playback:
   • Play/pause: Tap the MFB once.
   • Previous track: Press and hold the left earbud for 2 seconds.
   • Next track: Press and hold the right earbud for 2 seconds.
7. To activate Siri or voice assistant, quickly tap the right earbud three times.
8. To adjust the volume:
   • Turn down volume: Single tap on the left earbud.
   • Turn up volume: Single tap on the right earbud.
9. To charge the earbuds, place them inside the charging case and ensure the case is connected to a power source. The LED indicators on the case will show the battery status of the case.

FCC ID： 2ASR9-J

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.

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. Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

The device has been evaluated to meet general RF exposure requireme nt. The distance between the user and antenna should be no less than 3 0mm.

Table of Product Contents

Product Specification

• Bluetooth Version: 5.3
• Support: HFP/A2DP/HSP/AVRCP
• Charging Port: Type-C
• Battery life: 6-8 hours (earbuds) + over 30 hours (Charging box)
• Charging time: 1.5 hours for earbuds / 1.5 hours for charging case
• Transmission range: 15 meters (without obstacles)

Introduction

How do I pair two headphones with my phone?

• Please make sure both the earbuds and the charging case are fully charged before first use.

• Step 1
  Take both earbuds out of the charging case and both earbuds will power on and start pairing automatically
  (If the earbuds are not connected to your device for more than 5 minutes, the earbuds will automatically turn off. Press the MB button for about 3 seconds to manually turn on the earbuds when prompted “Power on”.)
  The indicator light of one earbud will flash white alternately, and the other earbud will slowly flash white when 2 earbuds paired successfully

• Step 2
  Enable the Bluetooth pairing mode on your phone device, search and select “J90 Pro” to connect. (You should hear a voice prompt “Connected” when wearing earbuds).

• If indicator light of earbud is off,it means the phone is connected

• Automatic connection
  By default, the earbuds will connect the last paired phone automatically when power on.

Prompt

1. If you have any problem pairing the two earbuds with your phone, put the earbuds back in the charging case and repeat the above steps.
   Or refer to the reset steps of Frequently Asked Questions in the manual.

2. These earbuds can be used not only together, but also individually
   If you want to use single earbud, just take one earbud out of the case and connect it to your phone. or when using two earbuds, manually turn off one earbud or put one back in the charging case and you’ll be able to use the other one earbud alone.

Functions

Telephone Communication

• Answer call: tap once
• Hang up: press and hold the key for 2s
• Refuse incoming call: press and hold the key for 2s

For Music

• Play/pause: tap twice
• Previous track: press and hold “L” for 2s
• Next track: press and hold “R” for 2s
• Activate Siri: quickly tap. for three times
• Turn down volume: single tap on left earbud
• Turn up volume: single tap on right earbud

Charging

Earbuds Charging
The earbuds will only be charged when you correctly place them in the charging slots and close the lid. (You can charge the charging case and the earbuds at the same time, or you can charge the charging case first and then the earbuds.
When the earbuds are charging in the charging case, the LED bar of the case will keep blink. The charging case will stop charging automatically and the indicator light on earbuds will go out when fully charged.

Case Charging
There is a Type-C us charging cable in the package, please use it to charge the case directly. During charging, the digital display will flash and display the battery level in real time. When fully charged, the number shows 100.

Charging Alerts

• After using it for a long period of time, due to the oxidation of the magnet connector, the earbuds might not be charged or even turned on.
• You can fix this problem by cleaning the magnet connectors on the earbuds and charging case with an alcohol wipe

Storage and Maintenance

• If the earbuds have not been used for more than 3 months, we recommend that you charge it.
• Please use an charger approved by FCC (Federal Communications Commission).
• Children aged 12 and under require adult supervision.
• Do not expose the earbuds to high or low temperatures, and do not use the earbuds during a thunderstorm.
• Avoid free fall or violent shock to the device. Keep the device away from sources of fire and do not place the device in water.
• Do not dissemble the earbuds

Frequently Asked Questions

• Q: Why don’t these earbuds pair with my phone?
  A : Make sure the earbuds are fully charged and powered on.
  Make sure your phone’s Bluetooth is enabled
  If there is no problem with the two points stated above, turn off the powered- on earbuds after 5 continuous and quick clicks.
  Put them back into the charging case and close the lip, wait for 1 minute, then open the charging case and reconnect the earbuds to the phone.

• Q: Why does the music cut in or out?
  A : First, keep the earbuds no more than 15m away from your phone (no obstacles).
  If the distance is less than 15m, follow these steps:
  1. Put the earbuds back into the case and close the lid, manually click “forget the J90 Pro”
  on your phone
  2. After 10 seconds, open the charging case and reconnect these earbuds with your phone

• Q: Why the earbuds still won’t be charged or disconnect from the phone after I put them in the case and close the lid?
  A : Make sure the charging case is not in a low battery state.
  If the charging case is in a low battery state, the earbuds will neither be charged nor disconnected.
  In this case, please use a type-c charging cable to fully charge the case.

• Q : Are these earbuds sweat- and water-resistant?
  A : These earbuds are sweatproof and slightly waterproof.
  For electronic devices, we do not recommend that you submerge the earbuds in water.
  For more detailed product FAQs, please contact our customer service.

Activation & Warranty

Permanent replacement of damaged, defective item or missing components. Please activate via email below within 15 days.
asInskhs@gmail.com

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