Feature: 1. Accurate Measurement: Adopting measurement grade high sensitivity GNSS receiver chip. Using a six star system with global coverage. Accuracy can also be ensured in places without mobile phone sign outdoors. Built in pressure gauge elevation measurement, supporting intelligent slope and mountain measurement, making height measurement more accurate. 2. Multiple Measurement Modes: Supports 4 measurement modes including area measurement (normal, length width, fixed width, fixed point), distance measurement (normal, fixed point, inclined distance), airborne measurement(rotating airborne, round trip airborne), and slope measurement(ordinary slope, smart slope, mountain) for enhanced accuracy. 3. Industrial Grade Safety: Features an industrial grade three proof process, making the land meter water proof, dust proof, and shockproof for long lasting durability. 4. Real Time Tracking: View trajectory graphics in real time during use and access saved graphics in the records. Export data easily for analysis and storage. 5. Clear Color Screen: Equipped with a 2.4 inch screen for easy viewing in sunlight, this land area meter provides a simple and elegant display with clear visibility. 6. Voice Prompts: The land meter offers real time voice prompts in English at a high volume for clear guidance even in noisy environments. 7. User Friendly Design: The land meter is designed with large keys for easy use, making it simple to use and easy to navigate for all users. Specification: Item Type: Handheld Land Area Meter Material: ABS Function: S4 Positioning Accuracy: Approx. 2.5m / 8.2ft Initial Pressure Calibration: Support Normal Area Measurement: Support Mountain Measurement: Support Intelligent Slope Measurement: Support Fixed Point Measurement: Support Fixed Width Area Measurement: Support Ordinary Distance Measurement: Support Manual Distance Measurement: Support Height Display: Support Height Measurement: Support Trajectory Display: Support Unit Setting: Support Unit Setting: Support Time Display: Support Data Statistics: Support History: Support Lighting And Currency Detection: Support Dry Battery: Support Li Battery: Support Data Storage: 200 Voice Broadcasting: Support Data Export: Support Receiver Chip: High sensitivity GNSS receiver chip Receiver Antenna: Passive large sized planar antenna Efficient Startup: 1 second hot startup and 30 seconds cold startup. Area Accuracy: ± 0.005acres (0.16-0.5acres), ± 1% (over 0.5acres) (when HDOP is below 1.0) Distance Accuracy: ± 1 meter (within 100 meters when HDOP is below 1.0) Functional Features: Latitude and longitude display, altitude display, area measurement, distance measurement, land price calculation Data Statistics: Area statistics, distance statistics Area Records: 200 records Distance Records: 200 records Trajectory Display: The trajectory will be displayed in real time during the measurement process and can also be viewed in statistical records. Pressure Leveling: about 1 meter (pressure measurement, absolute altitude value needs calibration) (applicable only to S4), about 10 meters (GPS measurement, HDOP within 1.0) (applicable only to S4) HDOP Settings: Customize HDOP Settings Screen Display: Color screen (2.4 inches) Sound Prompt: Voice broadcast Working Temperature: -20 ℃ to 70 ℃ Storage Temperature: -30 ℃ to 80 ℃ Data Interface: USB interface, which can be used for charging Battery: 3.7V li ion battery 1800mAh X 1 [shipped with built in battery] . Package List: 1 x Land Area Measurement Instrument 1 x User Manual 1 x USB Cable 1 x Lanyard