Features:
Bone conduction speaker type for clear sound
Bluetooth version V5.3 EDR2 for fast and stable connection
Dual silicon microphones for improved vocal clarity
Intelligent noise reduction for better call quality
Upgraded chip for high-definition calls
Ipx6 waterproof rating for protection against rain and sweat
Automatic coiling and folding design for easy storage and portability

Specifications:
Oscillator Frequency: 20Hz-20Khz
Impedance: 32 Ohms
Sensitivity: 85Db/Mw
Battery Capacity: 150 mah
Play Time: 6-8 Hours
Standby Time: 150 Hours
Charging Time: 1.5 Hours
Frequency Band: 2.4Ghz
Bluetooth Protocol: A2Dp1.3 Avrcp1.5 Hfp
Weight: 23G

Package Includes:
1 x M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones