Our laser-Rangefinder is a premium product, measuring up to 540 yards with continuous scan mode, advanced speed technology, and a durable, water resistant body THROUGH THE LENS DISPLAY premium, ultra clear, multilayered optics with easy read, through the lens display with distance and battery meter, and continuous measurement mode for fast, convenient measurements SPEED, SCAN and HUNT TECHNOLOGY provides fast measurement with +/- 1 yard accuracy for quick setup, including carrying pouch, strap, microfiber cleaning cloth and quick start guide LIGHTWEIGHT AND PORTABLE (Eye-safe rangefinder Class 1 laser-with Less than 0.5mW average power output)weighing just 185g, with a water and dust resistant, durable body, perfect for carrying while hunting, or for measuring and surveying without extra weight or bulk POWER BUTTON: To turn on device, automatic power-off after no operation with 8 seconds. MODE BUTTON: Click "M" button to change four mode: RANGE, SCAN, FOG, SPEED Long press "M" button to change Meter and Yard. High accuracy, short measuring time, low power consumption, automatic power-off Portable optoelectronic device, waterproof laser-type:905nm Measuring range of distance:5-700yards Measuring range of speed:0-300km/h Magnification:6x Range measure accuracy:1yard speed measure accuracy 5km/h Battery:CR2-3V Operating temperature:-10 Celsius~50 Celsius Material:ABS size:110*75*45mm E ye piece size:16mm Exist pupil diameter:3.8mm Package Contents: 1* laser-rangefinder 1* Lanyard 1* Carrying pouch 1* Cleaning cloth 1* User manual Only the above package content, other products are not included. Note: Light shooting 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.