Bluetooth speaker portable speaker power rating 3 watt principle active power supplies rechargeable battery usb battery life 4 h battery capacity 400 mah charging port usb colour grey function speakerphone function control feature bluetooth pairing analogue input 35mm jack line in other connections usb wireless transmission bluetooth bluetooth codec sbc bluetooth range 10 m width 150 mm height 80 mm depth 70 mm weight 018 kg area of u