iSound Silver 3.5mm Fire Glow Mini Wired Speaker iSound-5288 Type: Portable Speaker Compatible Phone Manufacturer: Universal Driver: 1.75 x 1 Output Power: 3W x 1 Power Required: DC 3.7V/500mAh Battery Time: 5 hours at 70% volume (Built in Li-ion battery) Specifications: Includes: Fire Glow Speaker USB Charge Cable 3.5mm Audio Cable Features: Solid aluminum shell for best stability Color-changing glow, slowly morphs from one color to the next Vacuum bass design for surprising volume-to-size ratio Built in Li-ion battery (5 hour life at 70% volume) Connect via 3.5mm stereo input