MODEL INSTRUCTIONS
Vip Pro Bluetooth inductor piece instructions
Pair the induction piece with GB-T01 and keep it between your neck and chest. Leave its microphone uncovered and check audio with the selected Vip receiver.
Before you start
| Control or state | What it does |
|---|---|
| Audio path | Phone Bluetooth → short-range induction piece → selected induction Vip receiver. |
| Microphone | Integrated at the top of the cable-free piece. |
| Listed power | Rechargeable piece and separate 337/SR416SW receiver cell; listed use time up to 3 hours, depending on use. |
| Listed kit | Bluetooth induction piece, selected Vip receiver, two 337/SR416SW cells, USB cable and EU charger. |
Check the chosen option and your order’s contents before using or replacing parts. Optional bundles are included only when selected.
Confirm GB-T01 is connected and the piece is near the receiver; phone volume and transmitter position both matter.

1. Fit the selected receiver cell
- Check that your selected Vip receiver uses a 337/SR416SW cell. MegaMini uses LIR640 and has a separate guide.
- Unscrew the black receiver cap. Fit one cell with the positive, marked side facing up, then refit the cap straight.
- Fit the cell shortly before use. It drains while fitted, even when no audio is playing; remove it after use.
2. Inspect the receiver and plan safe removal
Inspect the receiver outside the ear. Background hiss can occur with an induction receiver; it does not prove that playback or calls work. Test the actual audio path.
Keep the sound opening clear. If it is blocked, ask model support about cleaning; do not probe it with a needle or alter the internal spring.
Do not force a receiver deeper. Keep its retrieval thread accessible and stop if fit or removal is not easy.

3. Pair and position the induction piece
- Hold the recessed button for at least 6 seconds until red and blue flash. Charge for at least 1 hour if it will not start.
- Select GB-T01 in the phone’s Bluetooth settings. A paired phone can reconnect automatically while Bluetooth remains on.
- Position the piece between your neck and chest, near the receiver. Keep its top microphone clear of tape and skin.
- Hold the button to switch off; the red light flashes twice.
4. Test the audio path and use the button
- Play a track at low phone volume and check the piece’s worn position.
- Make a separate microphone/call check.
- One click answers a call or pauses/plays recordings. Two clicks redial the last number in the call log.
- Hold for power or pairing. Control volume on the phone; use the phone’s controls if a function is unsupported by the phone or app.
5. Charge and finish use
- Use the supplied cable with a supply no higher than 5 V / 1 A.
- Red means charging and blue means complete. The listed charge time is about 1 hour and listed operating time about 3 hours, depending on use.
- Switch off the piece and remove the receiver cell after safe removal.
- End the call or stop playback, then switch off or disconnect the transmitter as described for this model.
- Use an accessible retrieval thread with your fingers only. If removal is difficult, stop repeated attempts and get medical help.
- Once the receiver is safely out, unscrew its cap and remove the cell. Store the receiver and cell separately.
Fix a failed check
Music works but calls do not
Confirm GB-T01 is connected and selected as the phone’s call-audio output. Test a call separately from music playback. Try another phone if the same check fails.
No audio or low audio
Check the selected receiver cell, positive-side orientation and straight cap. A cell left fitted can be flat even if the kit has not been used.
Test the audio source and the transmitter’s position separately. Restart the source/transmitter and try a known-working cell or another phone when the same check still fails.
Start with low volume. If the receiver makes a loud noise outside the ear, remove the cell and check orientation and cap alignment. Do not bend the internal spring; contact support if it persists.
A button function is unavailable
Use the controls described above, then try the phone’s on-screen controls or another app/phone. Some functions depend on the phone and app; do not change the receiver cell to troubleshoot a phone control.
The microphone is not heard
Keep the top microphone clear. Restart the transmitter and phone.
Test the kit microphone with Voice Recorder on Android or Voice Memos on iPhone, then make a separate call test. Check that the app/call uses the connected kit. Try another phone if the same microphone check fails.
Receiver removal is difficult
Use the accessible retrieval thread with your fingers only. Stop if it is not easy to remove; do not keep trying with tweezers or other tools. Get medical help for a retained object, and immediate help for a battery in the ear.
Care and safety
Do not push a receiver deeper or put tools or cotton buds into the ear canal. If removal is difficult, stop repeated attempts and get medical help. Severe pain, bleeding or discharge needs urgent care; a battery in the ear needs immediate help.
Mayo Clinic: ear foreign-object guidance · NHS: earwax advice
Keep the device, cables and adapters dry. If they get wet, unplug safely and allow them to dry fully; do not use an external heat source such as a hairdryer or microwave.
Stop using damaged equipment. Use the supplied or specified power parts, keep cables/adapters indoors and do not handle connected equipment during a thunderstorm.
Use is discouraged with a pacemaker, hearing aid, other electronic medical device or a hearing condition. Seek suitable professional advice before use in those circumstances.
Follow local rules for use, privacy and disposal. This product is not a toy. Ask CooMax for the documentation and warranty terms that apply to your selected product and country.
Get model-specific help
Tell us your selected Vip receiver, phone/app, whether GB-T01 connects and the induction piece's pairing or charging lights. Include its neck/chest position, the separate 337/SR416SW cell check and the first failed playback, call or top-microphone test.
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