Basic Functions: Single measurement,Continuous measurement,Pythagorean measurement,Area measurement,Volume measurement Specifications Model HD40/60/80/100 X5 TG50/TG70/TG100/TG120 DS50/DS70/ DS100/DS120 H-D510A/H-D710A/H-D100A/H-D120A Work Range 0.05-40/60/80/100m 0.2-40/60/80/100m 0.05-50/70/100/120m 0.05-50/70/100/120m 0.05-50/70/100/120m Bubble level / / 2 Bubbles Electronic level Electronic level Angle function No YES No Yes Yes Accuracy 2mm 2mm 2mm 2mm 2mm Storage / / 30 units 30 units 99 units Measurement unit options m/in/ft m/in/ft m/in/ft m/in/ft m/in/ft Add and subtract YES Yes Yes Yes Yes Power supply 2x1.5V AAA(not include) 2x1.5V AAA(not include) 2x1.5V AAA(not include) 2x1.5V AAA(not include) 3.7V 850mAhlithium battery Packing Contents 1*Laser meter1*Manual1*Gift box 1*Laser meter1*Portable bag1*Hand strap1*Manual1*Gift box 1*Laser meter1*Portable bag1*Hand strap1*Manual1*Gift box1*Reflective plate 1*Laser meter1*Portable bag1*Hand strap1*Manual1*Gift box1*Reflective plate 1*Laser meter1*Portable bag1*Hand strap1*Manual1*Gift box1*Reflective plate The maximum measuring range:40M.60M.80M.100MMeasuring accuracy:2mmMeasuring units: m/in/ft /ft+inLaser cla: Cla 2Laser type:635nm,<1mWArea, Volume Measurement: YesSecondary Pythagorean:YesIndirect Pythagorean theorem: YesAddition and subtraction: YesContinuous measurement: YesMin./max./value: Yes4-line display with backlight: YesSingle distance measurement: YesHistorical memory: 20Button: Soft rubber buttonsOperating temperature: 0-+40 degreeStorage temperature: -20-+65 degreeBattery type: AAA 2 X 1.5VBattery Not Included )