Bluetooth 5.0 Adapter -- Convert Non-Bluetooth devices to Bluetooth-enabled devices to discover more uses. Using high-quality Bluetooth 5.0 chip, the connection range is up to 33ft. The LCD screen shows its working status and allows you to freely choose the connected device.Transmitter Mode -- Plug this Bluetooth transmitter's 3.5mm audio cable into your non-Bluetooth device(like TV, PC, MP3) and pair it with your Bluetooth headphones/speaker.Receiver Mode -- Plug this Bluetooth receiver's 3.5mm audio cable into your non-Bluetooth device(like old speaker, car audio) and pair it with your smartphone.Lossless Sound Quality -- Adopt low-latency technology to minimize loss in wireless transmission and ensure audio and video synchronization.Support Hands-Free Calling -- Built-in microphone, one-click to answer calls. Never miss a call and keep your eyes on the road for safer driving.Working While Charging -- This Bluetooth audio adapter is powered by battery. 2 hours full charge can work for 8 hours. And supports working while charging, so you don't need to worry about low power.Easy to Use -- This compact Bluetooth adapter is small, lightweight and easy to carry. In receiver mode, you can switch songs and volume via its buttons without using the phone.