Headset Bluetooth Headset Wireless Music Headset Subwoofer Stereo Full-ear Stereo Cotton Retractable Features: Bluetooth.0 chip, faster and stable connection, clearer and smoother listening to music and playing games, and generally improved headset performance. The three modes can be switched . Plug-in cable/card/Bluetooth can be used in any situation. Plug-in cable does not consume power. It is fully Android ios system, and can be linked as long as the device supports Bluetooth function. It does not take up space, and can be folded and stored easily. The movable brace can be adjusted and retracted. It is convenient to fold up and carry. With a power reserve, it takes 2 hours to fully up listening to music for 10 hours. Product Description: Parameters: Bluetooth reception range: 10m Bluetooth version:.0 Battery capacity: 500MAH Use mode: Bluetooth/card/cable mode Use time: 10 hours Power input: DC5V/200MA Charging time: 2 hours Voice prompt:: Yes contain: 1x headset 1x data cable 1x instructions