1) No wires, no limits, Bluetooth TM wireless technology 2) Stylish and comfortable design 3) True freedom to talk wirelessly in office or in car 4) Easy one-touch operation 5) Noise reduction, echo elimination 6) Volume adjustable, mute function 7) L/R ear wearable 8) Also can connect with other Bluetooth TM devices, e.g. PDAs, laptops 9) Security: encrypted link 10) Weight: 16 grams 11) Range: up to 10 meters 12) Bluetooth 2.0 specification 13) Talktime: 4 to 5 hours 14) Standby time: 128 hours 15) Selectable colors: silver, golden and gray 16) Accessories: user manual, ear hook, travel charger 110 to 240V and car charger 17) Newly-increased functions: 18) Super strong stereo 19) Chargeable on both sides 20) Ear hook can be inserted in both sides, suitable for anyone with different listening habits 21) Outside handing type battery can be easily assembled and changed