Notes1) The transmitter does not support the microphone function, and the microphone function of earphones with microphones will also be invalid. Microphone accessory must be plugged in when using the microphone function. 2) The transmitter can only support one-to-one connection. For safety, when plugged into the Nintendo Switch game console, it does not support playing while charging. 3) The transmitter adopts 2.4g radio signal transmission, please do not use it near high-power electrical appliances (such as Induction Cooker and Microwave Oven), so as not to affect the normal use of this product. 4) If you want to use the transmitter on the PlayStation 4 game console, you need to connect the transmitter with Type-C to USB OTG Adapter or Cable first, plug it into PlayStation 4 game console via USB port, and then pair it with Bluetooth headset. 5) When connecting Bluetooth headset with transmitter, please turn off the Bluetooth function of other devices and ensure that Bluetooth headset is inpairing state. SpecifcationsModel: SW01 Bluetooth version: 5.0+EDR Bluetooth protocol: A2DP Frequency range: 2.402GHz- -2 480GHz SNR: >90dB Operating voltage: 5V Input: Type- -C / USB Operating distance: Up to 33ft/ 10m Dimensions: 47.8*27*7.85mm (L *W*H)Package Include1 X Type-C Bluetooth Transmitter 1 X USB Converter 1 X 3.5MM MIC 1 X User Manual (with retail package