Pyle Home PMS2B Mini Capsule Rechargeable Speaker for iPod/MP3/MP4/Computer/Laptop/Notebook/Audio/Gaming-Devices/PDA (Black) Plays all iPod/iPhone models and other audio devices with 3.5-mm audio jack Perfect replacement for laptop speakers Unique vacuum bass design for surprising volume and bass response Fits in your Hand / Pocket for ultimate portability Built in li-ion rechargeable batteries Frequency response 100HZ-20KHZ Battery Charge time:DC 5V 200MAH-300 MAH around 2.5 hours; USB 4 hours Plays On Fully Charged 8 hours Dimensions:2 D x 1.4 W x 2.2H Color: Black Sold as : Unit Plays all iPod/iPhone models and other audio devices with 3.5-mm audio jack - Frequency response 100HZ-20KHZ - Color: Black Perfect replacement for laptop speakers - Battery Charge time:DC 5V 200MAH-300 MAH around 2.5 hours Unique vacuum bass design for surprising volume and bass response - USB 4 hours Fits in your Hand / Pocket for ultimate portability - Plays On Fully Charged 8 hours Built in li-ion rechargeable batteries - Dimensions:2" D x 1.4" W x 2.2"H