Universal Compatibility: Seamlessly connect with a variety of devices including phones, tablets, cars, computers, TVs, and speakers using our advanced Bluetooth 5.0 technology for uninterrupted audio experience. Versatile 2-in-1 Functionality: Easily switch between transmitter and receiver modes to suit your audio needs, whether you're streaming music from your phone to a non-Bluetooth car stereo or receiving audio from your TV to Bluetooth headphones. Compact and Portable: Designed for on-the-go audio solutions, this lightweight and portable adapter ensures you can enjoy superior sound quality wherever you go. Product model:GT-RT05 Bluetooth version:V5.0 Support portcol:RX:A2DP/AVRC,TX:A2DP Frequency range:2400-2483.5MHz Sensitivity:-81dBm Less than 0.1%BER Transmission distance:Barrier-free about Greater than 10m Frequency response:10Hz-20KHz Signal-to-noise ratio:greater than equal 75db Audio Performance:SBC decode Interface type:Aux in 3.5MM audio*1, Aux out 3.5MM*2 Basic function:Bluetooth receiver/Bluetooth transmitter Use method:Plug and play Support equipmect:"Mobile phone/tablet/PC/TV/speaker/amplifier/headset/projector Mixers and other equipment with audio input/output interfaces" Power supply mode:Type-C interface Input parameters:DC 5V=500mA (2A max) Battery capacity:3.7V/250mAh 0.925Wh Using the length:About 5-6 hours (Charging time:about 1.5 hours) Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:Black Material:ABS Package Contents: 1 * Bluetooth audio adapter 1 * 3.5mm audio cable 1 * RCA audio cable 1 * USB Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.