Mileseey S6 Handheld Digital Laser Rangefinder and Multi-function Laser Measurer With Backlit Display, 200-Feet Distance Measurement,Ingress protection from dust accumulation and water splashing. Min/Max Distance Tracking,Area- Volume Calculations Indirect measurement using Pythagoras,Addition/Subtraction Measurement. Buzzer indication,4-line display with backlight,History measurement records.