Specifications:Stylish wireless bluetooth speaker, beautiful and easy to use.Bluetooth wireless transmission, supports hands-free calls, more convenient.Support TF card auto play function.Support audio output, can connect audio interfaces of computer, mobile phone, MP3 and so on.Small size, large capacity, large volume.Item Name: bluetooth-compatible SpeakerMaterial: ABSAdjusting Way: ButtonsBattery: 300mAh Rechargeable Lithium Battery (Included)Effective Power: 3WSNR: >80dBDistortion Rate: 0.5 PercentFrequency: 90Hz - 20KHzResistance: 4Play Time: About 1 HourBluetooth Version: 2.1Working Frequency: 2402MHz - 2480MHzTransmission Range: 10m (Max)Features: TF Card Support, bluetooth-compatible Audio Input, Hands-Free Calls, PortableSpeaker Unit: 45mm/1.77" (Approx.)Audio Interface: 3.5mm/0.14" (Approx.)Width: 60mm/2.36" (Approx.)Height: 65mm/2.56" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Speaker1 x USB Cable