Laser accuracy: ±1/16 inch per 100 feet. Working range: up to 1,600 feet with receiver. Scanning modes: 10, 45, 90 degrees. Power source: 4 x D-cell alkaline batteries (included).Battery life: up to 40 hours. Operating temperature range: -4°F to 122°F. Dimensions: 8.6" L x 8.1" W x 11.8 H. Included alkaline batteries, carrying case. The Spectra Precision LL500-2 is a self-leveling rotary laser that comes with an HL700 receiver, alkaline battery, tripod, and a 15-foot grade rod marked in feet and eighths. It also includes a tripod case for easy transport and storage. This laser is designed for outdoor use and can project a highly visible laser beam over long distances, making it ideal for large-scale construction and excavation projects. The LL500-2 model specifically uses a grade rod marked in feet and eighths, providing greater precision and accuracy for certain applications.