The E7500i is the equivalent US model. 650ft (200m) Range Indoors and Outdoors at up to 1mm (1/16") Accuracy. Leica DISTO D510 (E7500i) laser module can read a target at distances that exceed your ability to see the laser point. With the point finder (a 4x zoom digital camera) you find your target in the display, extending the useable range to the ~650ft max. Dimensions can even be entered onto photographs with no effort whatsoever. Measures in Feet Inches Yards Decimal Feet Decimal Inches Meters. Last 30 measurement memory 198g (6.9 oz) 2 of Type AA 1.5 V. Leica DISTO D510 (E7500i) is a 14 measurement mode LDM that is accurate to 1/16th of an inch. It is IP65 rated against dust, dirt, and rain and features a point finder, a bright LCD screen, a 360-degree tilt sensor and Bluetooth Smart. Quick sketching Bluetooth Smart with app. Measurement data can be conveniently and accurately transferred using the integrated Bluetooth Smart Technology. The app Leica DISTO sketch supports the creation of ground plans or tables on iPhone or iPad.