Mini Speaker,Womail subwoofer Hamburger Speaker for iPod iPad Laptop iPhone Tablet PC Purple Compatible with most devices that may utilize headphones With 1.4 subwoofer, the vacuum base offers deep and rich sound with HI-FI result 360-degree sound field intergrates a cone design with a custom-built speaker to project sound in all directions Built in, rechargeable lithium battery each charge can last for 3 - 5 hours Color choices:Blue,Hot Pink,White,Purple