Spec:

Standard
Bluetooth V1.2

Range
10 meters (33 feet)

Audio Codec
15 bits resolution, S/N > 60 dB

Frequency
2.4GHz~2.4835GHz ISM Band

Profiles Supported
Headset, Handsfree

Connection
Point-to-point

Weight
20 g (including battery)

Dimension
60(L)* 25(W)* 24(H) mm

Talk time
Up to 6 hr (on HV3)

Standby time
Up to 120 hr

Output Power
0 dBm (class II)

Security
128 bits encryption

Power Consumption
30mA(talk); <1mA(standby)

Battery
Rechargeable Li-ion polymer 120mAh

Charging
5V DC, 100~240V AC adapter

Charging time
2h