1It adopts for U-BLOX chip, equipped with GPS positioning system, with precise measurement, small error and high precision. 2VI level anti-skid design, using professional ergonomic design, not easy to fall off when working. 3Waterproof, dustproof, fall proof, stable performance, no need to worry about machine falling when measuring mountain forest and fish pond. 4Equipped with LED backlight display, the measurement results can be displayed on the screen directly, convenient for observation. 5It supports full screen display of real-time track, which can display navigation and positioning information such as real-time accuracy, latitude, altitude, etc., and real-time restore of walking track path with GPS positioning data, which can be displayed directly on full screen. 6It supports manual fixed-point measurement, length and width measurement, airborne measurement and distance measurement. The measurement method is simple and easy to operate. Condition: 100% Brand NewItem Type: Land Area MeterMaterial: ABSModel: EM90Panel: FSTN 2.4in, Resolution 128x160Area Measurement Range: 0-99999 HectaresLength Measurement Range: 0-99999999mRelative Accuracy Of Area: <= 2% (Less than 3 Hectares), <= 1% (More than 3 Hectares)Track Tolerance: 2mEnvironment: Temperature -20-60C, Humidity 5%-95%Satellite Accuracy: 1.5mMeasurement Error: 0.01mu (Approx. 6.67)Storage Record: 50Built-In Battery: 3.7V 2500mAh Lithium BatteryWeight: Approx. 370g / 13.1ozProduct Size: Approx. 14x6x3cm / 5.5x2.4x1.2in 1 x Land Area Meter1 x Portable Rope1 x USB Cable1 x Adapter1 x Instruction Manual