Bluetooth speaker portable speaker power rating 3 watt system 1 way system speaker system 10 mono principle active frequency response 180 20000 hz amplifier type digital power supplies rechargeable battery usb battery life 5 h type of battery lithium ion colour black functions streaming speakerphone function control feature bluetooth pairing number of full range drivers 1 bassmidtone chassis 40 mm analogue input 35mm jack line in other co