The Spectra Precision Laser LL300-4 is your medium-range, high-accuracy solution. Ideal for basic slope work such as driveways and ramps, checking or leveling elevations, concrete forms, footings and foundations for small- and medium-sized jobs, and for excavations, digging footings and septic tanks. The LL300-4 includes rechargeable Ni-Cd batteries and battery charger. Ni-Cd batteries boast a 100-hr. battery life for less down time in the field. Application: For all your medium to high leveling slope work, Angle Reference: 5deg self-leveling range, Kit Includes: 1 LL300 laser , 1 HR350 receiver , 1 c59 rod clamp, 4 Rechargeable Ni-Cd batteries , 1 Battery charger, Manuals, and 1 Plastic case