Item Type: Wireless Bluetooth Speaker Material: ABS Color: As Pictures Shown Weight: Approx. 123g/4.3oz Loudspeaker Size: 52mm/2.0in Supported Protocol: Memory Card/USB/FM/AUX Output Power: 3W Battery Capacity: 300mAh Frequency Response Range: 60Hz-- 15KHz Operation Mode: Key Signal Distance: 10m/32.8ft Interface Type: Plug-in Card, USB Supported Format: Memory Card Package List 1 x Wireless Bluetooth Speaker 1 x Data Cable 1Mini wireless bluetooth speaker, lightweight and convenient to carry. 2Bottom bass diaphragm design, release HIFI level sound, bringing you extraordinary enjoyment. 3True wireless stereo for series connection, 2 speakers can play in series. High quality chip, so that the audio transmission is stable and fast, the linearconnection distance can reach up to 10m/32.8ft. 4It is compatible as long as it connect with bluetooth, audio transmission without delay. 5Also supports for connect the speakers through a USB port and a memory card port, through the button to operate.