Overview: RT05 is a BT 5.2 receiver and transmitter audio adapter, compatible with all mobile phone or tablet, also can work on the car, computer, TV, older version speaker etc. Whether you are studying, living or working, share audio at any time. Features: BT5.2 Connection: BT 5.2 version, low latency audio receiver & transmitter, equipped with the smart chip to ensure the stronger and more stable transmission. Supports 10M long distance transmission. Receiver Mode: Change the traditional car stereo system or home audio system into BT-enabled ones. After paired, play music wirelessly from your BT-enabled smartphones, tablet PCs, etc. Transmitter Mode: Connected to the non-BT audio devices (such as MP3, MP4, TV, and PC, etc.), changing them into BT-enabled ones, and making it work with BT headset and speaker. Strong Compatibility: Comes with both 3.5mm and 2RCA audio cable, this audio adapter can be used on your computer, laptop, home stereo system, headphone, smartphone, etc. (3.5mm audio and RCA cable are included.) Low Power Consumption: Built-in 250mAh rechargeable lithium battery ensures 5-6 hours of working time, you can enjoy wireless free for a long time. Simple use, no need to download any APP. Specifications: Model Number: RT05 BT Version: 5.2 Protocol Supported: A2DP, AVRCP (RX mode), A2DP (TX mode) Transmission Distance: 10m (open space) Interface: Aux in 3.5mm audio*1, Aux out 3.5mm *1, Headphone jack 3.5mm *1 Frequency Response: 10Hz-20kHz Frequency Range: 2400-2483.5MHz Sensitivity: -81dBm75dB Audio Performance: SBC decode Battery Capacity: 3.7V 250mAh Working Time: 5-6 Hours Charging Time: about 1.5 Hours Charging Port: Type-C Input: DC 5V 500mA Color: Black Main Item Size: approx. 7.6*7.1*1.8cm/2.99*2.79*0.70in Main Item Weight: approx. 70g/2.46oz Package Size: approx. 15.5*11.0*3.6cm/6.10*4.33*1.41in Package Weight: approx. 168g/5.92oz Package List: 1 * BT Audio Transmitter & Receiver 1 * 3.5mm Audio Cable 1 * RCA Audio Cable 1 * Charging Cable 1 * User Manual