Specifications: Wearing Type: Open-ear Net Weight (g): 26g Supported Profiles: HSP/HFP/A2DP/AVRCP Transmission Distance: 33 feet (10m) Battery Capacity: 180mAH Charging Time: 2H Music Time: 10H Standby Time: 10days Built-in Memory: 32GB Waterproof: IPX8 Functions: Bluetooth/MP3/Hand Free Call Package Included: 1* Bone Conduction Earphone 1* Charging Cable 1* User Manual