Net weight: 20g
Sensitivity: 102dB
Sound features: Super Bass
Sweatproof: IPX4
Surface material: Sweatproof & inhibition of bacteria.
Ear-hook: Flexible ear-hook
Battery: lithium 4.5V /100 mAh
Charging time: about 1.5h
Playtime: up to 8h
Standby time: about 200h
Built-in: Handsfree Microphone
Charging port: Micro USB port
Charging specification: 5V /0.5~1A
Bluetooth version:V4.1+EDR
Bluetooth Chip :CSR BC8635
patent: ZL2015 3 0120360.0