Main features: 1) Standard: Bluetooth 1.2 specification 2) Color: silver and black or white 3) Range: up to 30 feet (10m) 4) Audio code: single audio 5) Frequency: 2.4GHz ISM band 6) Bluetooth profiles supported: handsfree 1.0 and headset 1.1 7) Transmitter power: Class 2 8) Connection: point to point 9) Weight: 13 grams 10) Figure size: (L) 67mm x (W) 27mm x (H) 14.5mm 11) Talk time: 4 to 6 hours 12) Standby time: up to 180 hours 13) Security: encrypted link 14) Power consumption: 30mAh (working), 1mAh (standby) 15) Battery: 120mAh lithium-polymer battery, inserted 16) Charging time: about 2hour 17) Operating temperature: -10 degrees to 45 degrees 18) Charging temperature: 0 degrees to 45 degrees 1 9) Certification: CE, FCC and BQB approved Inner packing: Box dimensions (L x W x H): 14.5 x 11 x 5.5mm Outer packing: Outer packing: 50pcs/ctn, 100pcs/ctn Carton dimensions (L x W x H): 400 x 265 x 410mm, 530 x 400 x 410mm