Rugged design handles tough jobsite environments. Durable housing design with thick over-mold in key impact areas ensures protection up to a 3' drop. Glass enclosed top housing for maximum weather and environmental protection. Battery runtime of up to 85 hours. Battery level gauge alerts when a battery charge is low. Kit includes RL25H rotary laser, RD5 detector, detector bracket, tripod, 8' grade rod, (3) D batteries, AA-cell battery, carrying case.