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. 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 & Blue Material: ABS Measuring Range: 0-999,999.99m² (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/ m²/ hm²/ km² Length Unit: m/ km Built-in Battery: 1 * 3.7V 2000mAh Lithium Battery Item Size: 174 * 76 * 28mm / 6.85 * 2.99 * 1.10in Item Weight: 184g / 6.49oz Package Size: 24 * 15.2 * 5.7cm Package Weight: 380g Package List: 1 * GPS Land Meter 1 * USB Cable 1 * User Manual (English) 1 * Carry Bag