XSKN X-mini II White Capsule Speaker Delivering on the promise of "Sound beyond size" the x-mini II Capsule Speaker is petite in size but massive in sound. Hook it up to your mobile phone, MP3 player or laptop and impress your friends with this pocket size boom-box. Pump out your tunes with crisp clear acoustics that will easily fill up a room and elevate the mood of everyone around you. Furthermore, the x-mini II comes with an all new feature called the "Buddy-Jack". X-mini owners can now come together and connect a row of X-minis to a single music source (e.g. MP3 player) to enhance the overall volume and audio clarity among a larger audience. Specifications:Dimension: 55mm x 44mm (closed resonator) Net Weight: 83g Speaker: Magnetically Shielded 40mm 2W/4 ohm Loudspeaker output: 2W Frequency Response: 100Hz-20KHzSignal-to-Noise: >/ 80dBDistortion: <\ 1.0%Playback time: up to 12 hours Battery Capacity: 400 mAh Battery Charging Voltage: 4.2V/+0.5VBattery Charge Time: 2.5 hours