Features: 1.Transmitter mode: Wirelessly transmits audio from a non-Bluetooth TV, home stereo system, or CD player to a Bluetooth headset or speaker. 2.Receiver mode: Wirelessly transmits audio from a Bluetooth-enabled phone, tablet or computer to a wired stereo speaker or headset. 3.Switch between transmitter and receiver mode with the flick of a switch,use the accompanying 3.5mm/0.1in cable and 3.5mm/0.1in to 2RCA cable. 4.Used in computer, laptop, home stereo system, headset, smart phone, MP3 player, CD player, etc. 5.Fine workmanship, good performance, small size, light weight, easy to use, easy to use, long service life. specification:Condition: 100% Brand New Item Type: Wireless Bluetooth Audio Transmitter Receiver Material: ABS Colour: As Pictures Shown Weight: Approx.74g/2.6oz Sound Channel: Stereo Sound Transmission Frequency: 2.4-2.48GHZ Transmission Range:10m/32.8ft Battery Type:Polymer Lithium Battery Battery Capacity: 200mA Duration of Service:4.5h Bluetooth Version: 5.0 Charging Time:2h Charging Voltage: 5V PackageList:1x Bluetooth Audio Transmitter/Receiver Adapter1x Micro USB Power Line1x RCA Cable1x3.5mm Aux Cable1x User Manual