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 / 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 List1 x BT Receiver1 x Manual1 x Charging Cable1 x BT Antenna1[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.