?Description :<br>MASTECH MS6450 Laser Ultrasonic Distance Range Measure Meter<br> Features : <br>Calculate length｣ｬ area and volume accurately and quickly.Laser to target the point to which you want to measure.Auto converts feets to meters.With back light.10 hours of continous dynamic measurement with alkaline battery.<br>Specifications : <br>Measurement range : 0.6 to 15m (2 to 50 feet)Recommended operating environment : in doorsAccuracy : &amp;plusmn;0.5%&amp;plusmn;1digitResolutions : 0.01m (1feet)Aperture angle : approx. &amp;plusmn;5 degreesLaser diode type : Red laser diode 650nmPower supply : 6F22 9V (not include)Battery life : 10 hoursItem size : 14 x 5.7 x 3.8cm<br>Calculation range :Length : 9999mArea : 99999m2Volume : 99999m3<br>Package including : <br>1 x MASTECH  MS6450 Ultrasonic Range Finder<br>Details pictures :