Features :
1 . Wireless Bluetooth headphones, deliver a high quality audio listening experience with clarity.
2 . Smooth bass response for enjoyment of all styles of music.           
3 . Lightweight and great for sports, walking, running or a favorite activity.
4 . Bluetooth 5.0, energy saving, improved data transfer, and less interference.
5 . Long Lasting Rechargeable Battery ,LED power digital display Can do mobile power to charge mobile phone
6 . Up to 4-6 hours of play back time and super long standby time.
7 . Built in microphone allows these headphones to act as a headset for hands free calling with mobile devices.

Detail :       
Material : ABS
Headphones Size : 1.7*2.9*2.1cm/0.67*1.4*0.83inch|
Battery compartment Size :  3.5*4.8*9.2cm /1.38*1.89*3.62inch
Bluetooth Version : 5.0 EDR
Effective distance : 10m (accessible)
Battery capacity : Headphone 60mAH, charging compartment: 3500mAH
Headphone usage time : 4-6 hours (depending on volume)|
Headphone charging time : 1 hour
Battery compartment charging interface : micro USB
USB output : 5V 1A
Noise reduction version : CVC8.0
Microphone : With
Binaural pairing method : Automatic pairing after booting
Horn diameter : 8mm
Impedance : 32Ω
Sensitivity : 42db
Distortion : ±5%
Waterproof rating : IPX7 (water splash)
Button function : Pause/play, connect/hang phone, up/down track switch (music mode press, press power button twice)

Include :   
2X Bluetooth headset
1X Battery compartment
1X USB cable
1X English manual
4X Ear cap