Range of 1800' and rotation speed of 600 RPM. Simple 1 button operation, 360 deg. horizontal. Fully automatic self leveling working range +/- 1/8" over 100'. Temperature-resistant from 14 deg. F. to 140 deg. F. (-10 deg. C. to 60 deg. C). Tip-over-tough rubber exterior, metal housing, shock absorbing interior. Dust and waterproof. Set includes: LAR200 indoor/outdoor rotating laser, receiver with clamp, hard shell case, fixed head tripod, Hi/Lo elevation rod, 2 "D" batteries, manual.