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 ReceiverMaterial: Aluminum AlloyBT Version: V5.2Sound Decoding: SBC, AAC, aptX, aptX HDBT Protocol Support: A2DP, AVRCP, HFP, HSPFrequency Range: 2400MHz-2483.5MHzFrequency Response: 20Hz-20KHzOutput Load: 16-320 AdaptiveTransmission Distance: Approx. 15m or 49ft (Open Place)Input: BT SoundOutput: AUX, Optical Sound, Coaxial SoundCharging Interface: Type CBattery Life: About 10 HoursBuilt in Lithium Battery Capacity: 500mAh (Included).Package List:1 x BT Receiver1 x Manual1 x Charging Cable1 x BT Antenna