Bosch GPL 5 Professional. Battery type: AA, Battery voltage: 1.5 V, Battery life (max): 24 h. Dimensions (WxDxH): 80 x 40 x 104 mm, Weight: 250 g. Operating temperature range (T-T): -10 - 50 °C, Storage temperature range (T-T): -20 - 70 °F, Relative humidity: 0 - 90 %