Leica Rod Eye-120 Basic Receiver Working diameter (laser dependent): 2950 feet Detection window: 2.75 inches Automatic shutoff: 10 minutes Audio volumes: High/Low/Off Arrow display: 9 channels Detection accuracies: Fine (+/- 1mm), Medium (+/- 2mm), Coarse (+/- 3mm) Environmental rating: IP67   Compared to the Rod Eye-Basic, new Rod Eye-120 Basic has a longer range, larger detection window, more display channels, and an additional detection accuracy setting.  __________________________________________________________________________________________________________________________________  __________________________________________________________________________________________________________________________________         Leica Part #: 789922