Features: Bluetooth-compatible 5.2, 5 hours of battery life, lossless-sound quality, hands-free call, plug-and play, AUX interface. Connect to the TV 3.5mm audio interface, and transmit the sound to the headset via Bluetooth-compatible, so you are not afraid to disturb your family when watching movies at night. Connected to 3.5mm audio port, the speaker without Bluetooth-compatible function can also be played wirelessly. Connect the bluetooth-compatible connector to the car AUX interface through the adapter, and connect the bluetooth-compatible to the car-stereo, which can not only make calls, but also listen to dynamic music, so that your journey is no longer lonely. Lossless-sound quality CD-level enjoyment: high-resolution restoration of lossless-sound quality, bringing CD-level music experience only one, you can listen to the music in your phone. Bluetooth-compatible 5.2 listening-to songs without lag: low power consumption and high rate stable signal transmission, listening-to songs more smoothly. Specifications: Material:ABS Size:As Picture Shown External power supply: No external power supply. Transmission rate: 100(Mbps) Effective work: radius15m Bluetooth-compatible standard: 5.2 Operating frequency: 2400(MHz) Package Includes: 1x Wireless Receiver Transmitter 1x User Manual 1x USB Power Cable note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.