Version 1.2 Bluetooth Profile Supported: Headset and Handsfree Profiles Frequency Range:2.4GH Spectrum working Distance Range :10M Dimensions(main unit):58(L)X 22.0(W)X 23(T)mm Weight(main unit):<12g(include battery) Charghing Time: Within 2.5 hours Talk time: Up to 5 hours Standby Time: Up to 200 hours Rechargeable Battery:Lithium Polymer,3.6V,130mAh installed *Version 1.2 *Bluetooth Profile Supported: Headset and Handsfree Profiles *Frequency Range:2.4GH Spectrum *working Distance Range :10M *Dimensions(main unit):58(L)X 22.0(W)X 23(T)mm *Weight(imain unit):<12g(include battery) *Charghing Time: Within 2.5 hours *Talk time: Up to 5 hours *Standby Time: Up to 200 hours *Rechargeable *Battery:Lithium Polymer,3.6V,150mAh installed # Support Dual profiles: Hand-free & Headset profiles # Connect with a PC: Only PC exist Audio Gateway Profile supported # MP3 Supported # Voice Dial and Re-Dial Supported # Turn on/off button # Answer/End call # Noise-canceling Microphone # The neuter gender packs,no logo. http://www.dostocklots.com