100% brand new and high quality Put it behind your right ear, when your head nods forward, an electronic position sensor will sounds a loud alarm to instantly wake you and your passengers Especially suitable for long-distance driving or night driving ON/OFF switch Easy to use and comfortable to wear for a long time Powerful alarm beep Battery inside Color: Black Quantity: 1pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: Black Anti-Sleep Device x 1 FREE DELIVER AROUND COLOMBO