Feature: 1. High Sensitivity GNSS Receiver Chip: Equipped with an accurate grade high sensitivity GNSS receiver chip, this GNSS receiver GPS land meter provides accurate location measurements for various applications. 2. Built In Barometric Altimeter: The handheld land area meter features a built in barometric altimeter for accurate elevation measurement, supporting smart slope and mountain slope measurements for enhanced accuracy in height measurement. 3. Versatile Measurement Modes: The land area meter supports four measurement modes, including area measurement (ordinary area, length width area, fixed width area, fixed point area), distance measurement (ordinary distance, fixed point distance, ordinary slope distance, fixed point slope distance), aerial measurement (circling aerial, back and forth aerial), and slope measurement (ordinary slope, smart slope, mountain slope). 4. High Accuracy: With high accuracy in area measurement and excellent satellite signal reception, this land survey measuring meter ensures accurate measurements in various environments, even in areas with poor mobile signal coverage. 5. User Friendly Design: Featuring a clear 2.4 inch display, intuitive large buttons, real time English voice prompts, and high volume alerts, the handheld GPS land meter offers a user friendly and straightforward operating experience for users of all levels. Specification: Item Type: Land Area Meter Material: ABS Function: S4 Positioning Accuracy: Approx. 2.5m / 8.2ft Initial Pressure Calibration: Support Normal Area Measurement: Support Mountain Area Measurement: Support Intelligent Slope Measurement: Support Fixed Point Measurement: Support Fixed Width Area Measurement: Support Normal Distance Measurement: Support Manual Distance Measurement: Support Height Display: Support Height Measurement: Support Trajectory Display: Support Unit Setting: Support Time Display: Support Data Statistics: Support History Records: Support Illumination, Currency Detection: Support Dry Battery: Support Li Ion Battery: Support Data Storage: 200 Voice Broadcast: Support Data Export: Support Receiver Chip: High Sensitivity GNSS Receiver Chip Receiver Antenna: Passive Large Size Flat Antenna Quick Start: Hot Start 1 Second, Cold Start 30 Seconds Area Accuracy: ±0.005 acres (0.16-0.5 acres), ±1% (over 0.5 acres) (when HDOP is less than 1.0) Distance Accuracy: ±1 Meter (within 100 Meters When HDOP is Less Than 1.0) Features: Latitude and Longitude Display, Altitude Display, Area Measurement, Distance Measurement, Land Price Calculation Data Statistics: Area Statistics, Distance Statistics Area Records: 200 Distance Records: 200 Trajectory Display: Real Time Display of Trajectory During Measurement, Can also be viewed in statistical records. Pressure Calibration: Approximately 1 meter (for pressure measurement, absolute height value needs calibration) (only applicable to S4) Approximately 10 meters (for GPS measurement, HDOP within 1.0) (only applicable to S4) HDOP Setting: Custom HDOP Setting Screen Display: Color Screen (2.4 Inches) Sound Prompt: Voice Broadcast Working Temperature: -20℃-70℃ Storage temperature: -30℃-80℃ Data Interface: USB Interface, Can be charged through this interface Battery: 3.7V Li Ion Battery 1800mah x 1 (Included). Package List: 1 x Land Surveyor 1 x Manual 1 x USB Cable 1 x Lanyard