Feature: 1. [Stable And Lag Free] This receiver uses BT 5.2 chip, stable transmission signal, more powerful performance, fast speed, lag free, and has strong compatibility. 2. [Lossless Decoding] BT receiver with aptx HD decoding technology, providing CD grade sound quality, so you can enjoy lossless shocking sound quality. 3. [Multi Interface] Music receiver supports BT receiver mode, optical coaxial digital to analog conversion, AUX sound output, with multi device expansion interface. 4. [HiFi Sound Quality] This BT music receiver adapter is compatible with a variety of old speaker amplifier equipment, strong signal without delay, enjoy HiFi sound. 5. [Compatible Devices] Wireless sound adapter has a wide range of compatibility for TVs, game consoles, CD players, MP3, etc, easily upgrade your old equipment. Specification: Item Type: BT Receiver Material: Aluminum Alloy BT Version: V5.2 Sound Decoding: SBC, AAC, aptX, aptX HD BT Protocol Support: A2DP, AVRCP, HFP, HSP Frequency Range: 2400MHz-2483.5MHz Frequency Response: 20Hz-20KHz Output Load: 16-320Ω Adaptive Transmission Distance: Approx. 15m / 49ft (Open Place) Input: BT Sound Output: AUX, Optical Sound, Coaxial Sound Charging Interface: Type C Battery Life: About 10 Hours Built in Lithium Battery Capacity: 500mAh (Included). Package List: 1 x BT Receiver1 x Manual1 x Charging Cable1 x BT Antenna