Product Description:Features:Can directly connect with a Mini USB or 3.5 mm audio cable to convert a common sound box into a Bluetooth sound boxSupports Bluetooth 2.1+EDR technologyCompact size for ease of carrying General Specs Brand & Model:TS-BT35A05/TS-BT35F01 Bluetooth:V2.1 + EDR Bluetooth Protocol:AVRCP/A2DPFrequency Response :2.4GHz-2.4835GHz Transmission Range：Up to 10 m Charging Input Voltage：DC 5V