ATN Auxiliary Ballistic Laser can be used with day, night and thermal ATN Smart HD scopes to measure accurate yardage from the shooting position to the target. Mounted to the front of the scope tube, it ensures that every shot matters. Can be attached, paired and zeroed-in in a couple of minutes. Precision +/-1 yard/meter in the range 5-1093 yards (5-1000 meters). Imperial or metric units of measurement. Bluetooth compatibility to X-Sight II HD Series, X-Sight 4K Series, ThOR-HD and ThOR 4 Series. No additional buttons - simple operation through your smart scope's keypad. Direct transfer of distance measurements to the ballistic calculator for automated point of impact correction. Range information is displayed in photos and videos you capture with your scope. Ultra-low power profile - up to 12 hours of continuous use on a single battery.