Type: Wireless Bluetooth speaker with alarm clock Connection mode: Bluetooth connectivity Interface type: USB Battery capacity: 1400 Frequency Response : 40Hz-20KHz output power: 3W Signal to noise ratio: Equal to or equal to75dB Power supply mode: Built in lithium battery Bluetooth protocol: 5.0 Effective distance: 10rice function: Card insertion,radio,dustproof,Voice prompt,Call function ,NFCfunction Operation mode: Key intended for: currency display: Yes Shell material: Plastic Speaker adjustment mode: Key Whether there is radio function: Yes Cabinet material : ABS Appearance size: 143*33*50mm Power mode: USB colour: white,black Full charge Bluetooth Song Play- 3-5 Hour Clock Display + Alarm – 400 Hour Package include: 1 pcs wireless speaker with alarm clock 1 pcs usb cable 1pcs 1400Mah 16850 Battery inside Note: Battery only on pcs inside