Features:

1. Adopted Bluetooth 4.1 technology offers stable connection and lossless transmission
2. 40mm speaker unit restores every music details, active noise reduction ensures the clear sound quality
3. With mic built-in, supports hands-free calls
4. Built-in 400mAh battery offers up to 30h of music time after 3-4h of charging
5. Quality soft and breathable protein leather makes it very comfy to wear
6. Folding design for convenient carry and storage
7. Widely compatible with most Bluetooth-enabled devices

Specifications:

Bluetooth Version: V4.0
Effective Range: 10m
Speaker Size: 40mm
Power Supply: Built-in 400mAh rechargeable battery
Charging Time: 3-4h
Music Time: Up to 30h
Color: Black
Material: Plastic + Protein Leather