【CHARGABLE & POWER VIA USB】: This wireless BT transmitter is powered via USB, no battery so you don't need to charge it. If your TV haven't USB port, you can use any phone charger, PC USB or other 5V USB outlet, then it will automatically turns on (Blue light flashing) when the TV is turned on. When the blue light isn't being flashing, it means the connection succeed. | 【WIDELY COMPATIBLE】：TV, PC and all audio devices lacking it add Bluetooth function, from non-BT media devices (TV, PC, laptop, iPod) to BT receiver, BT wireless audio streaming headphones and speakers through 3.5 mm Adapter or RCA cable connection. NOTE: Only pairs with ONE DEVICE at a time. | 【Easy to operate, plug and play】Use our wireless BT transmitter without drivers or software. When use it with TV, it powered by USB, just connects the AUX cable and RCA cable, the AUX cable insert to the device, and the RCA cable insert to TV, then the wireless BT headphone could connect. When use it with PC or laptop, you just need insert the device to PC via USB then the wireless BT headphone could connect. | 【High-speed transmission】Working range up to 33ft / 10m: The BT transmitter conveniently transfers audio streams to BT headphones or speakers at twice the distance of similar devices. The BT transmitter offers more entertainment options. | 【Warranty】 We provide 60-day refund and 12-month warranty. If the product you purchased has ANY problems, please contact us as soon as possible.