Two way powerful ?101.6 mm woofer and ?36 mm tweeter provide high-quality sound Bluetooth 4.0 connectivity with portable electronic devices up to 10 m away Weather and water resistance suitable for jobsite or sports / recreational use Mobile device can be stored inside and charged 2.1A USB power supply socket allows for charging a mobile or any other device Bluetooth : Version: 4.0 Practical max output : 18 V: 10 W, 14.4 V: 6 W, 10.8 V: 3.5 W, AC: 4 W Speaker Size : Woofer: ?101.6 mm / Tweeter: ?36 mm Dimensions : 211x203x286 mm Net weight : 2.9kg