Features: 1) Either for left or right ear according to individual custom with/without G type soft headset 2) Voice dialing capable (with phones that has voice dialing feature) 3) Receive calls on your headset, last number re-dial function 4) Comfort with a precision fit 5) Built-in over-charging protection 6) Speaker volume and gain control 7) LED status indicator for different modes of operation Specifications: 1) Technology: Bluetooth CSR V2.0 (compatible with Bluetooth 1.2& 1.1), Class 2 2) Sensitivity: -80dbm 3) Broadcasting range of 10m (no solid obstacle) 4) Frequency band: 2.40GHz ~ 2.48GHz 5) Talk time: up to 5 hours 6) Standby time: up to 160 hours 7) Weight: about 9.5g