Opti-Logic Micro I Laser Rangefinder VAC (Vertical Angle Control) Ballistics Compensation Weighs only 3.5 ounces Scanning Feature Makes Ranging the Surround Very easy. Internal RED LED and Red Dot Targeting is visible in all lighting conditions ARCHERY--RANGES FROM 4 TO 100 YARDS NON-REFLECTIVE, 600 YARDS REFLECTIVE