Complete leveling crew in a case laser, HR350 receiver and C59 clamp, alkaline batteries in a portable hard shelled carrying case * Simple one-button operation for quick start up * Height of instrument alert-unit stops rotating when jarred to avoid erroneous readings * Job site durable and tough-withstands a 3-Feet (1-Meter) drop on concrete or a 5-Feet (1.5-Meter) tip over without breakage and rugged design reduces downtime * Energy-efficient design offers long battery life on 2 D-cell alkaline batteries