Features:

Battery capacity: 150 mA

Use time: 8 hours,

Charging time: 90 minutes

Horn type: bone conduction vibrator

Bluetooth 5.3

Waterproof grade: IPX6

Specifications: Model M1S Color Black Net Weight (g) 23g Microphone Yes Volume Control Yes bluetooth Version V5.3 Supported Profiles HSP/HFP/A2DP/AVRCP Transmission Distance 33feet (10m) Frequency Response 20-20k Hz Battery Capacity 150mAH Charging Time (h) 1h MusicTime 6-8h Standby Time (h) 150h PackageIncluded: 1*M1S Bone Conduction Headphones 1* Charging Cable