Item Type: Bluetooth Transmitter Receiver Material: ABS Bluetooth Version: V5.2 Bluetooth Protocol Support: RX:A2DP AVRCP HSP HFP TX:A2DP Transmission Distance: 10m/32.8ft (Linear Transmission) Built in Battery: 250mAh Lithium Ion Battery (Included) Operating Time: RX20H, TX12H Charging Time: About 2 Hours Charging Voltage: DC 5V Input Output: 3.5mm Interface Codecs: TX, aptX Adaptive, aptX HD, aptX LL, aptX, SBC RX,aptX Adaptive, aptX HD, aptX, AAC, SBC1Low Latency APTX: Bluetooth transmitter with built in high end chip, lossless sound quality, low latency and high compatibility. And with aptX Adaptive,aptX HD,aptX LL,aptX,SBC codec to achieve excellent sound and low latency. 2Bluetooth 5.2 Technology: Bluetooth 5.2 adapter is designed with the latest bluetooth 5.2 technology, transmitting twice as fast as older bluetooth versions to provide more stable wireless for your devices. 3Dual Mode, Dual Connection: Bluetooth transmitter receiver supports TX mode and RX mode, TX mode suppor