Description:Measurement range: length, width, height, area, addition and subtraction, volume, multiple length units and measurement between Pythagorean, maximum and minimum.Wide use: can be widely used in construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, etc.High accuracy: high accuracy, ensuring higher accurate measurement.Power saving: it will automatically shut down if not used for 150 seconds to save power.Digital display: large LCD display, easy to read.Specification:Model: A: SW-M50 B: SW-M70 C: SW-M80 D: SW-M100 E: SW-M120Measuring distance: A: 50m; B: 70m, C: 80m indoor, D: 100m indoor, E: 120m indoorMaterial: plasticColor: blackSize(approx): 11.2*5*2.5cm/4.41*1.97*0.98inchDistance measurement accuracy: 1.5mm(d*five ten thousandths)*Type: 635nm, 1mWAutomatic cut-off: 20 secondsAutomatic shutdown: 150 secondsVoice prompt: yesStorage temperature range: -20~60Operating temperature range: 0~40Storage humidity: RH85%Battery: 1.5V 2*AAA battery(not included)Data storage: 30 groups of DataPackage:1 pc x Distance meter1 pc x Cloth bag1 pc x Lanyard1 pc x ManualNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 1-2 cm differences due to manual measurement.