Microlab M102 Daisy-Chain Multi-Color Compact Mini Stereo Speaker, Blue: * Compact speaker for all occasions * Amplified sound for your multimedia gadget such as tablet and smartphone * Daisy-chain MD102 or more for better sound effects * High portability, ergonomic speaker designed to carry it with your palm * Built-in long-life rechargeable battery * Output power: 1W RMS * Frequency range: 150Hz to 20kHz * Signal/noise ratio: >60dB * Output: 3.5mm earphones * Input: 3.5mm stereo plug, mini-USB * Color: blue