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