DTI CAR AUDIO Mini Cube Multi-Function Bluetooth Speaker (Green) Fashionable cube design with metallic touch gives it a perfect match for your personal portable speaker -Aluminum housing/metallic touch surface New Mini aluminum vibration film loud speaker, which has clear alt and pure woof -This compact travel speaker is ideal for use at the office, home, & anywhere else Music Cube is an MP3 player, and speaker for most audio devices, such as mobile phone, PC/N b k PC/Notebook, CD/MP CD/MP3/MP /MP4 l p Ayer etc. Rechargeable Lithium battery built-in -Line-in for other audio sources, as laptop speaker, mobile phone speaker etc.