Specification : ?Tiny, innovative, lightweight design-13 grams(Clip on). ?Compatible with the majority of Bluetooth enabled mobile phones. ?Ultimate hands-free and wire-free solution that connects your Bluetooth technology enabled design mobile phone, computers and PDA. ?Detachable design with three ways of wearing: ear hook, ear plug, clip, for different environment and fr both man and woman. ?Allow "wireless" VoIP phone calls(like: Skype) through Bluetooth enabled PC. ?Rechargeable battery for 6 hours talking time and Stand-by 200 hours time. Specification: Bluetooth specification: Bluetooth 1.2 compliant Support Profile: Hands-free, Headset Power class: Class 2 Frequency range: 2402-2480MHz Spread Spectrum: FHSS(79 CHANNELS) USA/EU Modulation: GFSK(Gaussian Frequency Shift Keying) Interoperability: Bluetooth Headset profile or Audio Gateway role Package type: HV1/HV2/HV3 Security: Pairing, Encryption, and Authentication RF Output power: -6dBm ～ +4dBm Sensitivity: <0.1% BER at -80dBM Operation range: Up to 10 meters Battery: 120mA 3.7V Input Power: AC 100～240V，DC 5.10V/200mA Standby time: 200hrs Talk time: 4～6hrs Charging time: 1.5～2hrs Dimension: 58.70mm?21.55mm?15.18mm Weight: with Ear hook 16.0g with Clipper 13.0g