Hilti 2062051 PD-E Laser (1 mW, 635 nm, Class 2, Class II )Range Meter with Soft Case Accuracy plus minus 0.04 in; Max measuring distance 656 feet Data memory - 30 last measurements Uses 2 AAA batteries, which are included, providing up to 5000 measurements Operating emperature range 14 - 122 f Includes laser range meter, 2 batteries, 1 hand strap and 1 pouch