PinSeeker technology with Jolt gives a vibrating pulse to confirm the laser has locked onto flag. Accuracy to 1 yard. Ranges 5-1000 yards (400+ yards to flag). 5x Magnification. 24mm Objective lens. Fast focus system. Waterproof construction. LCD display. Posi-thread battery door. Ergonomic design with stabi-grip technology. Legal for tournament play. Used by more than 97% of PGA Tour pros. Requires 3V Lithium battery (included). 2-Year manufacturer warranty. Includes Silicone skinz and Protective carrying case.