Private design combined New technologies: bluetooth v3.0 and vibration technology Small, simple, durable, portable and fashion design Good-quality electroplated abs material Powerful base, high sound quality No louder speaker inside, new syntonic-3d effect sound technology makes the solid surface form a vibration and sound Enjoy the fantastic music from different medium Bluetooth version: v3.0, support: bluetooth a2dp, avrcp profile, support any bluetooth enabled devices Working with iphone (ios system), it can display the battery status of the speaker on the screen once connected Transmit power: class 2, low radiation Working distance: 15meter max Frequency range: 40hz-20khz Output: 10w rms Signal-to-noise: >= 75db Distortion: