Model:B21 BK/RED
 
Bluetooth 5.0 chip, fast and stable connection
Used 50mm high magnetic NdFeB driver unit, brings clear sound quality
Built-in 1000mAh high performance polymer lithium battery, 80h long playing time
Touch control design for music play/pause and answering/hanging up phone calling
Adopt high-definition omni-directional noise reduction microphone to ensure clear voice quality and eliminate noise
Support TF card, bluetooth and wired modes
With ergonomic design, comfortable to wear
Great for running, hiking, cycling, car driving, business occasion, etc, enjoy superb sound quality instantly 
 
Specification:
Bluetooth version: 5.0
Effective operating distance: ≤10 meters
Headphone battery capacity: 1000mAh
Music playing time: 80 hours
Headphone charging time: 3.5 hours
 
Package Included:
1 x Headphone
1 x User Manual
Other things not included