Item Type: BT TransmitterMaterial: ABSModel: LE502BT Version: BT V5.3Supported Protocols: A2DP, AVRCP, AFH, HFP, HSPVideo Sound Decoding: aptX Adaptive, aptX HD, aptX LL, aptX, for SBCWorking Frequency Band: 2.402GHz -2.480GHzInput Interface: USB (free drive), AUXPower Supply Mode: USB 5VWorking Distance: >10m / 33ftPackage List1 x BT Transmitter1 x Antenna1 x Cable1 x Manual1Stable and Efficient: BT 5.3 wireless transmitter, BT 5.3 stable and efficient transmission power, lower power consumption wireless sound, optimized decoding algorithm. 2Support Dual Stream (TX Mode): Wireless transmitter supports connecting 2 BT speakers or headphones at the same time (using the same CODEC), and the dual connection can support up to aptX Ada. 3Note for APTX Use: For aptX Adaptive CODEC is preferentially supported in single connection (the connected device must also support for aptX Adaptive) when you use the adapter. 4Video Sound Decoding Indicator: Video sound transmission coding status light, lit when corresponding to coding. aptX Adaptive encoding LL and HD lights are on at the same time. 5Widely Compatible and Driver Free Use: BT 5.3 transmitter is compatible for Windows XP 7 8 10, for Linux, for PS4, for Android system, driver free use.