Anker Classic Portable Wireless Bluetooth 4.0 Speaker with 20 Hour Rechargeable Battery and Full, High Def Sound A7908 High definition sound and the industry's longest playtime packed into one of the smallest packages. Your mobile audio, delivered. Volumes of High def. Don't simply pump out volumes of sound, but volumes of surprisingly clear and full bodied sound. Powered by a 4 watt, 2 inch driver and topped off with a bass port, experience the clarity and volume of a boombox, without the bulk of one. Play All Day and All Night. We packed the whole set into a 3 inch cube that easily slips into your pack or purse. The built in rechargeable battery enables a breakthrough 15 20 hours of playtime so you can jam through a full day and still play your nighttime ambiance soundtrack on a single charge. Not to mention breakthrough up to a 33 foot connection range (standard is 30 feet or less). No PhD Needed. Built for ages 6 and up, simply slide the on/off switch to the "on" position to automatically connect to the last connected device and start streaming your music that's just one step. The unit also doubles as a speaker phone with a 2 foot range microphone so you can answer or make calls mid song. Broad Compatibility. Connect with any bluetooth enabled device (Bluetooth 2.1 and over) or just plug in with the traditional audio cable to start your tunes. Get to know us. We created Anker with a single goal in mind to make the smart life easier. That means starting with affordable, high quality gear and ending with a commitment to 100% user satisfaction.