The Mutant Media YoYo is the perfect companion to your mobile lifestyle.  Compact, expandable, colorful, and fun, the Media YoYo adds great sound to any portable music player.  Small enough to fit in your pocket, purse, or backpack, the YoYo expands to reveal its accordion center.  This unique feature adds depth and clarity giving this small speaker a huge, clear sound.

Features:

• Portable pocket size speaker in YoYo sharp for ease carrying
• Expendable diagram to enhance bass sound effect
• Retractable 3.5mm audio jack makes it compatible with most of the popular MP3 audio players
• Glow LED power indicator ring adds night time ambiance
• Built-in rechargeable Lithium Ion battery for extended play without other power source

Specs:

• Output: 2.4 Watts
• Speaker: 36mm micro speaker ,40hm
• Rating Power: 1.8 Watts
• Frequency Response: 100Hz-20kHz
• Battery Voltage: 3.7V
• Battery Capacity: 400mAh
• Battery Charging Voltage: 4.2V+0.05V
• Battery Time:DC(2.5 hours),USB 4Hours
• Accessories: USB charging cable
• Package dimensions: (L x W x H): 1.97″ x 1.97″ x 1.38″
• Unit Dimensions: 2.375″ x 3.75″ x 4.5″
• Net Weight:0.30lb