Description: for Add feature to Switch to pair with headphones, compatiable with most headphones like for, qc 25/35, for WH-1000XM2/XM3, for Surface Headphones, etc. Plug toamp; Easy to Pair: No battery built in, plug to play. Also there is no need to worry for adittional battery drawning with it low power consumption. Double click the only button to pair, support dual stream and transfer sound to 2 headphones at the same time. Noamp; Dual Link Support: With its Low Latency technology, the sound delay can be reduced to unnoticeable range ( High Speed Pa Through PD Charging: Support all standard power, 5v/9v/12v/15v 3.1A input and 5v/9v/12v/15v 3A output standard, bring you super fast charging experience. Continuously wirele audio even with pathrough charging to Switch, and no overheating problem. We recommend you use official Switch charger. If you want to use it to watch TV and watch movies on your PC,Please make sure your headphones support LOW LATENCY, Otherwise it will have a little sound delay. Specification: Standard: V5.0 Range: Cla 2, Up to 33Ft Support: A2DP, AVRCP, AFH, HFP, HSP Codec: Low Latency, aptX, SBC, AACPort : USB+Type-c Package Includes: 1x Audio 1x Type C / USB A Cable 1x User Manual