Specifications:

Bluetooth version：V3.0+EDR

Lithium battery：3.7V/800 mAh

Call/music play：about 12 hours

Standby：30 days

Charging time:3h

Bluetooth frequency：2402MHz~2480MHz

Transmission range：8-10meter

Speaker diameter：Ф40mm

Speaker impedance：32Ω

Frequency response：20~20KHz

Microphone size：4*1.5mm

Microphone sensitivity：- 42dB

Microphone direction：omni directional

Microphone frequency：100Hz-8KHz

USB-Micro USB charging cable：80Cm

Notice:

Don’t use headset during charging .

Fully charging headset before first use .

What’s in the box?
1 X Bluetooth headset
1 X Micro USB charging cable 
1 x user manual  
1x3.5mm cable