Specifications:
1) Version: Bluetooth V1.2 version
2) Frequency: 2.402GHz - 2.480GHz
3) Talking time: up to 6 hours
4) Standby time: up to 150 hours
5) Operating distance: 10m (class 2)
6) Charging time: within 3 hours
7) DSP: full duplex transmission, noise suppression and echo cancellation
8) Signal-to-noise: above 60dB with 15-bit sound effect decode
9) Bluetooth profile support: excellent compatibility with Bluetooth enabled
    devices, including Mobile phones, PC, PDA and printers

Features:
1) Comfortable wearing feeling
2) Call handle incoming and outgoing calls
3) Silence status is available whenever you need, which ensures better
    intimacy protected
4) High security (128bit coding, avoid wiretapping) and small transfer power
    (1mW)