Features :
- Bluetooth V5.0
- Aux-in
- Stereo Audio 
- 40mm driver 
- 1 year warranty 
 
Headphone specifications:
- Speaker Size : 40mm
- Frequency Responce : 20HZ -20KHZ
- Max. Input Power : 20MW
- Built-In Aux Input : 3.5mm Stereo Jack
- Impedance : 32ohm
- Sensitivity : 96 + - 3 DB
 
Bluetooth V5.0 :
- Wireless Distance up to 10 meters
- Support A2DP , AVRCP ,HSP ,and HFP
- Battery level indicator on smartphone
 
Build-in rechargeable battery :
- 200Mah lithium battery
- Continuous music playback : up to 8 hours operation
- Continuous talk time : up to 8 hours operation
- Standby time : up to 15 days
- Charging time : 2 hours