Callaway 300 Golf Laser Rangefinder with Power Pack Range 5-1000 yards with 6x magnification (+/- 1 yard accuracy) Pin acquisition technology (P.A.T) locks onto flag quickly from up to 300 yards, even with objects in background Scan landscape to acquire distances to multiple targets at once Lightweight (7.5 oz.), compact design; water/fog proof; legal for tournament play Power pack value-add extras include sleeve (3) of Callaway chrome soft golf balls, divot repair tool and extra 3V Battery (2Pk)