Specifications:Display song playback time and audio channel.Mini and compact, easy to carry.Enjoying the subwoofer stereo music.Support memory card or USB disk music play.With telescopic antenna, you can receive the FM radio.Type: Mini SpeakerMaterial: Plastic + AlloyStorage Media: Micro SD/TF Memory Card Supporting Fat16/Fat32 File SystemFunctions: TF Card, U Disk, FM Radio (Memory Card & U Disk Not Included)Music Format: MP3Headphone Jack: Support Headphone OutputPower Specifications: DC 5V USB Power Adapter or Computer USB ChargingBattery: 600mA Lithium Battery (Included)Endurance: 2-5 Hours, Actual Playback Time Depends on VolumeFrequency Response Range: 150-18000Hz (3dB)Signal to Noise Ratio: >85dBOutput Power: RMS 3W x 2 THD=10%Features: Mini, Portable, with Antenna, SubwooferSize: 50mm x 48mm x 52mm/1.97" x 1.89" x 2.05" (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 Mini Speaker1 x 3.5mm Audio Cable1 x Charge Cable