Adopting advanced technologies such as GPS, embedded single chip and high accuracy method, this instrument can measure field area and length. It's applicable to measurement of area such as farmland, green land, forest, water area, beach, factories and mines. It can quickly measure area, distance and perimeter of any shape.Features:Digital LCD Display & LED Light -- 2.8" large color screen with backlight displays measuring value, figure track and automatically calculate price after measurement, more intuitive, easy to read; with LED light to illuminate in the dark environment, easy to use no matter in the day or at night.Rechargeable Multifunction Land Meter -- Automatic or manual measuring method selectable. It can measure area and length of any shape (containing mountainous land and slope); it can measure length between any two points or any path (length and distance). It can set area unit price, length unit price and so on. Built-in 2000mAh large capacity lithium battery for strong endurance, easy to charge it via equipped USB cable.Data Record & Cash Detection -- It can save and record 99 historical data and figure track. Historical record can be viewed, inquired and deleted at any time. It's integrated with auxiliary function such as currency detection, which is convenient to use in daily life.Wide Application -- Applicable to measurement of area such as farmland, green land, forest, water area, beach, factories and mines. Widely used in agriculture, forestry, water conservancy land management and tax as well as charging of agricultural machinery working.2 Models Optional -- NF-188 or NF-198. Both of them feature area/ length measurement, auto/ manual testing mode, LED light and cash detection; NF-198 also features height/ barometric pressure/ satellite measurement, vehicle-carrier measurement mode, USB data transmission to PC, and NF-198 can measure girth together with area.Note:1. Please read the user manual carefully before use.2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.Specifications:Model: NF-188/NF-198 (Optional)Color: Grey & BlueMaterial: ABSMeasuring Range: 0-999,999.99m (Area); 0-999,999.99m (Length)Measuring Error: 1-2% (Area below 0.5acre), 1% (Area above 0.5acre); 0.5-3m (Length)Area Unit: acre/ m/ hm/ kmLength Unit: m/ kmBuilt-in Battery: 1 * 3.7V 2000mAh Lithium BatteryItem Size: 174 * 76 * 28mm / 6.85 * 2.99 * 1.10inItem Weight: 184g / 6.49ozPackage Size: 24 * 15.2 * 5.7cm / 9.45 * 5.98 * 2.24inPackage Weight: 380g / 13.40ozPackage List:1 * GPS Land Meter1 * USB Cable1 * User Manual (English)1 * Carry Bag