Description:
Brand Name: gblue
Model: K23I
Bluetooth Version: BT V4.1 + EDR
Chip: ISSC
Bluetooth Arrange: about 15 meters
Standby Time: ~100 hours
Talking Time: ~6.5 hours
Charging Time: ~2 hours
Connect Support: Can connect with two mobile phones
Color: Black
Weight: 6.85g
Size: Approx. 55 x 14 x 8mm

Feature:
1. Selected imported ISSC chip to make the signal more stable.
2. With bluetooth 4.1 technology, longer connecting distance supported and longer time for using.
3. 2HFP and 2A2DP dual audio channel, more fluent for listening to music.
4. Can become a remote shutter, easily control selfie photo taking.
5. DSP denoised technology, also reducing the degree of distortion, brings a clear sound.
6. Highly stuitable for all kinds of cellphone that with bluetooth function, supports power display on IOS system.

How to use it?
Turn on: When it is off state, press the main button(in the front) for about 8 seconds, the LED indicator will shine to blue then red. After red light shines, search the device in your cellphone and pair with it.
Turn off: Press the main button for a while until the red light shines once and out.
Answer the phone call: Under the connecting state, press the main button for once.
Hang up the phone call: Under the calling state, press the main button for once.
Re-dial: Press the main button for twice, it will auto re-dial the last number that you call out.
Siri Voice: Press the main button for about 2 seconds until you heard "beep", it will enter into the Siri Voice in your phone.
Cut the songs: Press "+" is for the pre; press "-" is for the next.
Volumn control: Long press "+" or "-".
Voice language Change: While turning on the headphone, press "+" and "-" at the same time, there is four languages for changing.
LED Indicator
While charging: the red light on all the time
After fully charging: the blue light on all the time
No power: the red light keeps shining, and it will have voice notice

Package Included:
1 x gblue K23I bluetooth headphone