Features: Accuracy: ±0.5%±1digitResolutions: 0.01m(1feet)Aperture angle: approx. ±5 degreesLaser diode type: Red laser diode 650nmPower supply: 6F22 (9V) x 1Dimensions: 136mm x 59mm x 38mmCalculation range:Length: 9999mArea: 99999m2Volume: 99999m3NOTE: battery not includedPackage Contents: 1×MS6450 LASER GUIDE ULTRASONIC DISTANCE METER ESTIMATOR RANGE FINDER