Features: Ultra-long Ranging: 0-199.999 metres measuring range with millimeter level accuracy, more practical & more accurate. High Definition LCD Screen: Clear large screen with backlight digital display, which shows the measurement results more clearly, and the dark environment does not affect the reading. Automatic switch-off after 3 minutes of no operation. Ultra-long Endurance: With the built-in 260mAh low internal resistance lithium polymer battery, once fully charged, it can achieve ultra long standby up to 300 days. Can work for 6 hours without interruption. Unit Switching: 5 commonly used ranging units can be freely switched - MM/CM/M/IN/FT. Data Storage: Can store 10 sets of data for easy querying, and after exceeding this limit, it will loop over from the first set. Wide Application: Suitable for surface measurement, flat measurement, diameter measurement, flexible object measurement, and irregular object measurement in daily life and work. Specifications: Measuring Range: 0-199.999m Measurement Unit: MM/CM/M/IN/FT Battery Type: 260mAh lithium polymer battery Endurance: 6 hours of uninterrupted work Standby Time: 300 days long standby Operation Temperature: -10~50 Automatic Shutdown: after 3 minutes of no operation Data Storage: 10 groups Material: Stainless steel Package Size: 14.2 * 9.6 * 2.5cm / 5.59 * 3.78 * 0.98 inch Package Weight: 62g / 2.19oz Package List: 1 * Rangefinder 1 * Type-C Charging Cable 1 * User Manual (English)