Features: 1.100%?Brand?new，?high?quality 2.LCD?with?Backlight 3.Your?distance?measurer?transmits?ultrasonic?waves?to?a?point?you?want?to?measure 4.Auto?OFF:?switches?off?if?you?do?not?press?any?key?for?about?1?min 5.It?measures?the?time?taken?by?the?waves?to?reflect?and?then?calculates?and?re-transcribes?the?distance 6.Level?function(one?vertical?level?bubble，?one?horizontal?level?bubble) 7.Package?Weight:?about?70g. Specification: Measure?distance?from?0.5m?to?18m Accuracy?+-0.5%?+-1cm Resolution?1cm?or?2\\1?inch Units?of?Measure?:?Feet/Meters Package?Included: 1?x?Ultrasonic?distance?measurer?(Battery?is?not?included) 1?x?English?User?Manual