Feature: 1. It adopts for U‑BLOX chip, equipped with GPS positioning system, with precise measurement, small error and high precision. 2. VI level anti‑skid design, using professional ergonomic design, not easy to fall off when working. 3. Waterproof, dustproof, fall proof, stable performance, no need to worry about machine falling when measuring mountain forest and fish pond. 4. Equipped with LED backlight display, the measurement results can be displayed on the screen directly, convenient for observation. 5. It 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. 6. It supports manual fixed‑point measurement, length and width measurement, airborne measurement and distance measurement. The measurement method is simple and easy to operate. Specification: Condition: Brand New Item Type: Land Area Meter Material: ABS Model: EM90 Panel: TFT 2.4in, Resolution 240x320 Area Measurement Range: 0-99999 Hectares Length Measurement Range: 0-99999999m Relative Accuracy Of Area: <= 2% (Less than 3 Hectares), <= 1% (More than 3 Hectares) Track Tolerance: ±2m Environment: Temperature -20-60°C, Humidity 5%-95% Satellite Accuracy: ≤1.5m Measurement Error: 0.01mu (Approx. 6.67㎡) Storage Record: 50 Built-In Battery: 3.7V 3500mAh Lithium Battery Weight: Approx. 370g / 13.1oz Product Size: Approx. 14x6x3cm / 5.5x2.4x1.2in Package List: 1 x Land Area Meter1 x Portable Rope1 x USB Cable1 x Adapter1 x Instruction Manual1 x Warranty Card Note: The product can only be used outdoors in open areas. GPS can be affected indoors or around buildings, resulting in no signal.