Function Buttons: on/off, menu, previous song, next song, play/pause, volume controlLED display panel.Built-in high capacity rechargeable battery, support long play.Compact and portable, convenient to carry.Specifics:Interface Type: USB, AUXSpeaker Type: MiniPlayback Function: Radio, MP3Material:AluminumSupport Memory Card: YesDisplay Screen: YesAudio Classification: MiniCabinet Material:MetalSupport APP:NoSupport Apt-x: YesSpecial Feature: Wireless, Portable, MiniRemote Control: NoSpeaker Type: SurroundType: PassiveSpecifications:Material: Aluminum alloyPower source: Li-ion battery / DC5VSNR: more than 80dBMusic format: MP3Size: 50*50*50mmPackage List1 x Mini Portable USB Speaker1 x 3.5mm Audio Cable1 x USB Charger Cableook, Phone, etc. Supports USB2.0 high speed transmission, fully compatible with USB1.1.1Made of high quality fluorescence surface aluminum alloy, elegant and stylish in appearance. 2 Good sound quality lets you indulge in your favorite music 3 Supports Security Digital Memory Card, TF card, USB disk, FM, etc. 4 Supports Line IN function, receiving the audio source from MP3, MP4, PC, Notebook, Phone, etc. 5 Supports USB2.0 high speed transmission, fully compatible with USB1.1.