ACCURATE: Great support 4 high precision satellite system,GPS+BEIDOU+GLONASS+QZSS ,strong satellite signal, small measurement errors, area measurement error in 0.002 acres 3.2 inch LARGE SCREEN: Equipped with TFT backlit display allows measurements to be easily read, even in dark areas MULTIPLE MEASUREMENT MODES: Can measure the area of any terrains like farmland,gardens, parking lots, and pastures, just need to walk around to get the area of the terrain,also support measure distance and slope DURABLE DESIGN: IP67 waterproof strong dust-proof function.Portable design, fits in your hand or pockets perfectly, equipped wrist strap lets you hold the meter steady and carry HOW TO USE: Please start measuring after searching for satellite signals in outdoor open area.When the accuracy value displayed on the machine screen is below 1 m, then start measuring Colour: Black Material: plastic Package Contents: 1 x Handheld GPS Land Meter 1 x USB Cable 1 x Lanyard 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.