Product Overview (Headphones)
Button Functions
| No. | Buttons | Functions |
|
①
|
Multifunctional button (MFB) |
Press & hold for 2 seconds to power on / off |
| From off, press & hold for 5 seconds to enter pairing mode | ||
| Tap once to play / pause | ||
| Tap once to accept / end call | ||
| Press & hold for 2 seconds to reject call | ||
| Double-tap to activate voice assistant (i.e. Siri / Google Assistant) | ||
| ② |
|
Tap “+ / -” once to increase / decrease volume |
| Press & hold “+ / -” for 2 seconds to skip / replay track | ||
| Press & hold both for 5 seconds to clear pairing history |
LED Indicators
| No. | Indicators & Voice Prompts | Status |
|
A |
Solid Blue for 1 second | Power on |
| Solid Red for 1 second then off | Power off | |
| Solid Red, "LOW BATTERY" voice indicator | Low battery | |
| Solid Red | charging | |
| LED off | Fully charged | |
| Alternate Red & Blue flashes, "PAIRING" voice indicator | Pairing | |
| Solid Blue, "CONNECTED" voice indicator | Connected | |
| Blue flashes every 5 seconds | Disconnect | |
| Solid Pink for 2 seconds then alternate Red & Blue flashes | Pairing history cleared |
Product Overview (Transmitter & Charging Dock)
Button Functions
| No. | Buttons | Functions |
| ③ | Switch to "ON / OFF" position to turn the transmitter on / off | |
|
④⑤ |
|
Press & hold “ Press & hold “ |
| Once connected, press & hold for 8 seconds to lock the connection with the headphones ( for NB15T earphones, for a second pair of headphones) | ||
| Press & hold both simultaneously for 5 seconds to clear pairing history | ||
| Tap “ |
LED Indicators
| No. | Indicators & Voice Prompts | Status |
| B | Solid Red | Charging |
| LED off | Fully charged | |
|
C |
“ |
Power on |
| “ |
Connected to the NB15T earphones | |
| “ |
Connected to a second pair of headphones | |
| “ |
Pairing history cleared | |
| D | Solid Blue | Valid audio signal |
| Red flashes every second | Invalid audio signal |
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