Bluetooth Headphones Wireless Headphones Sports Earphones Sweatproof Earbuds Deep Bass HiFi Stereo 8 Hours Playtime Noise Cancelling Headsets by LOSEI;

Specification
1. Version：CSR 8635 V4.1+EDR
2. Supports：HSP/HFP/A2DP/AVRCP
3. Size：150*130*20mm
4. Net Weight：24g
5. Call Time：About 8hrs
6. Play Time：About 8hrs
7. Charging Time: About 2hrs

Operation Instructions
Charging
Use DC5V-0.5A/1A charger or a computer USB Jack to charge the headphone, the LED light is on red when charging, it turn to be blue when fully charged.
When the headphone has finished charging, it should be disconnected from the charging device.
Charge the headphone at least once every three months if long time no use.

Booting & Shutdown
Press and hold the headphone MFB for 3 seconds to boot, and the LED indicator will be blue.
Hold down the headphone MFB for 5 seconds to turn off.

Wireless Pairing
Hold down the headphone MFB for about 7 seconds to enters into pairing state, the indicator will flashing red/blue alternately,connect from your phone by searching'X1'in Bluetooth Settings and selecting 'Pair'.

Music Control
Click the headphone MFB to Pause/Play the current song.
Hold down the Button + about 3 seconds to playing the previous track, long press the Button- next song to select next song.

Volume Adjustment
Click the Button + or Button - to setting volume when calling or playing.

Incoming Call Answer
Click the headphone MFB to answer incoming calls or to end calls. Hold down the MFB for 2 seconds to reject incoming calls.

Last Number Call Redial
Double-click headset MFB to redial the last called number during standby mode.

Voice Dialing
Hold down the headphone headset MFB for 2 seconds to activate the voice assisant,as long as your device support that.