1) Main chip: CSR blue core 02
2) Bluetooth v1.1 compliant class 2
3) Modulation: GFSK
4) Hoping rates: 1,600hops / sec
5) Operation frequency: ISM band 2.400G ~ 2.4835GHz
6) Audio range: 300 ~ 3400Hz
7) Voice coding: 13bit PCM
8) Battery: 115Mah 3.7V rechargeable (lithium polymer)
9) Efficient distance: more than 30m
10) Receiver sensitivity: -80dbm 0.1%BER
11) Transmitter power (max.): -6dbm ~ +4dbm
12) Operation voltage: 3.0V ~ 4.2V
13) Antenna gain: 4dBi
14) Operating current: 30mA (4 - 5hrs)
15) Standby current: 2mA (depending on mobile type)
16) Sleep mode current: 20uA (more than 2 weeks)
17) Operating humidity: 5 to 85%;Operating temperature: -20°C ~ 55°C storage;Temperature: -20°C ~ 85°C
18) Volume level: 16
19) warranty: 2 years