Delivers unsurpassed portable audio performance from your mobile devices and tablets - more than 12 hours battery life from its built-in, high capacity, 600mAh Li-ion rechargeable battery. 12 hours of playback and can even charge your other mobile devices on the go viv its built-in USB port. Features two 1-5/8 inch (41mm) full range drivers and a built-in bass port, it produces full range JBL sound with exceptional bass. The JBL Charge wireless speaker is the portable audio powerhouse for any environment; 2 speakers. Compatible with iPod, iPhone and iPad. Bluetooth compatible. 3.5mm AUX in. 10 watts. 2 amplifier channels. Frequency 30Hz-50Hz. General information Model number: JBLCHRGBLEU. Size H8, W21, D18cm. Mains operated. Power from USB. USB cable included. (included). Battery life: 12 hours.