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Smallest bluetooth headset Product Discription:Bluetooth Core: V2.1+EDRBluetooth Program:ISSC+Class2Standby time: ≥ 100hoursTalk time: 6hoursCharging Time: 2-3 hourStandby Current: 0.7-1mABatery Capacity: 48mA/hWireless Frequency Range: 2.4GTransmission Power: 0 dbmTransmission Distance: 10MEnvironment Temperature: -20/+60 °COperating Voltage:3.7V More tips: Bluetooth is a radio technology developed to deliver short-range wireless mobility. It eliminates the physical wires between the high technology devices such as mobile phones. Most advanced Mini Bluetooth Headset with length 29.4mm & weight 6.8g only. Up to 5.5hrs talk time & 10m range allows you talk anytime freely. Bluetooth Headset works up to 15m allows you talking everywhere. All phone calls are connected wirelessly to your headset. Packing: Specification30*14*7mmWeight:6.10g Established in 2002,Adeadas Ltd is a company inChina with over8 years experience in the electronics industry. Specializing in Bluetooth wireless technology,Adeadas offers a wide range of products to the OEM and ODM market.