General Specifications Output power (W) : 3 Music playing time (hrs) : 5 Features Waterproof : Yes Speakerphone : Yes Bluetooth 4.1 : Yes 3.5 mm audio cable Input : Yes Auto-power off : Yes Dimensions Dimensions (in) : 2.8 x 3.38 x 1.24 Dimensions (cm) : 7.12 x 8.6 x 3.16 Weight (kgs) : 0.18 Weight (lbs) : 0.41 Battery Battery capacity (mAh) : 7 30 Charging time (hrs) : 2.5