Characteristics: Compatible with most devices that can use headphones LED indicator for power and charge Sound field of $ number intergrates a cone design with a custom speaker to project sound in all directions. With 1.4 subwoofer, the vacuum base offers deep and rich sound, with HI-FI output patented technology: the low-tensile resonance of the box technology allows for a stronger effect New concept of mini portable integrative speaker with small bundle can play in the center of the palm Type lithium batteries fitted, you can use a USB PORT or AC power adapter for charging. More convenient and easy to use, pruphase saving batteries. Built in, rechargeable lithium battery for each charge can last for 3 ~ 5 hours. Color: black, blue, white, green,pink More details about the speaker: Output: 2.4 w Grade power: 1.8w Size: 50wX50LX35H (mm) Speaker: 36mm micro speaker, 4Ohm Frequency response: 100Hz-2kHz Singal-noise:> 85dB Distortion: