Color:Black High standard specification * Double 5w speakers * The 40mm voice coins * In put sensitivity as 400mV * SNR ¡Ý 90dB * THD ¡Ü 0.3% Amazing audio performance The high standard specification make sure the big sound from a small size, and do not have to sacrifice performance for quality. Thick cover lead not to loose the stereo performance, enjoy your music with this Altavors SoundBank Bluetooth Speakers! Easy way, Easy go Mini and small size not only could be placed indoor, but also could be hold in your palm and enjoy your time outdoor, a great Portable Speakers. Built in 1800mAH Li-Ion battery could support continuous play time in wireless condition, available to recharged with any USB enabled devices. Wireless, Worriless In 33 feet range could be connected with bluetooth, wireless, worriless; There is an AUX jack offer more chance to connect speaker with phones, tablet, Mp3 and PC, more way, more chance with your Wireless Speakers! Multi-function, Much pleasure FM radio is available, TF card capable, multi function offer much pleasure. Hands Free Answer phone calls, dedicate status by voice.