Fangrui Product Details 1. Audio Receiver: Bluetooth-compatible 5.2 Chip, 15m Transmission Distance, Stable Transmission Signal. Support Aptx-hd Audio Codec, Low Latency+high-fidelity Audio Effect. 2. Output: Support 3.5mm Aux Audio Output, Toslink, Coaxial Output, And Allow Connecting Different Devices To Play Music (note: Only One Audio Port Output Is Supported, Not Three Audio Ports Output At The Same Time). 3. Long Battery Life: Built-in 500mah Battery, Which Can Work Continuously For 10 Hours After Charging For 2-3 Hours. 4. Applicable Occasions: It Can Be Used To Connect Old Audio/wired Speakers To Play Music On Mobile Phones/tablets. It Can Also Be Used With Car Radio. Specification: Chip: Qcc3031 Bluetooth-compatible Version: 5.2 Input Power: Dc5v Transmission Distance: 15m Power Supply Mode: Type-c Port Battery Capacity: 500mah Duration: 10 Hours Product Function: Bluetooth-compatible Reception/coaxial/aux Audio Output/optical Fiber Product Size: About 73x70x20mm/2.87x2.75x0.78inch Weight Of Main Engine: 60g Colour:as