Item Type: Bluetooth SpeakerMaterial: ABS + MetalBluetooth Version: 5.0Speaker Output: 3W Internal MagneticBattery Capacity: 400mAhBattery: Polymer Lithium Battery (Built-In)Play Time: 3-4 HoursTransmission Distance: 10 MetersSupports multiple playbacks such as Bluetooth, Memory card, call function, etc.Package List1 x Bluetooth Speaker1 x Data Cable1The speaker driver provides extraordinary sound quality performance to obtain rich deep sound and low harmonic distortion. 2The built-in 400mAh lithium battery allows you to enjoy up to 4 hours of playing time, and supports playing while charging. 3The effective transmission distance is 10 meters, the transmission is fast and stable, and it is compatible with a variety of devices. 4The mini size and portable design make this mini speaker easy to put in your clothes pocket and carry it with you. 5The mini metal speaker adopts surround sound effects, high-quality accessories, and sophisticated structural design.