Specifications:Bluetooth connection, enjoy the wireless subwoofer music.Mini and light weight, portable to carry outdoors.Also support TF card music play and AUX line-in.Type: bluetooth-compatible SpeakerMaterial: MetalBattery: 20000mAh Lithium Battery (Included)Frequency Response Range: 100Hz - 20KHzOutput Power: 5VSNR Ratio: 75dBSound Channel: 2.1Play Time: 6 HoursBluetooth: 4.1Wireless Distance: 10mFeatures: Portable, Mini, SubwooferSize: 21.7cm x 6.9cm x 4.5cm/8.54" x 2.72" x 1.77" (Approx.)Notes:Due to the light and screen setting difference, the color of item 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 Charge Cable