ACCURACY: Red beam visible up to 15 m, with an accuracy of ±3 mm at 10m in leveling applications EASE OF USE: One-button operation for imple point and click measurment. Superior screen visibility in all conditions with a black LCD display and easy to read white characters MEASUREMENT: Provides distance calculation, continuous measurement functions ERGONOMIC: Compact and lightweight design with ergonomic rubber over-mold. IP 40 rated INCLUDES: 2 AAA batteries