Key Features of the Bushnell Tour v4 Shift: Measurement Range: 5-1000 yds. Accuracy Range: +/- 1 yd. Magnification: 5x Power Source: 3V CR-2 Lithium Ion Battery Subscription Fees? No Waterproof? No Tournament Legal? Yes Product Summary: Bushnell made it better, faster, and stronger with the Tour V4 Shift Laser Rangefinder. JOLT Technology uses short vibrating bursts to confirm PinSeeker Technology has isolated and locked onto the target, eliminating any doubt, and a faster processor translates to faster yardage readings. Multi-coated HD Optics with 5x magnification provide yardage accurate to within a yard from a range of 5-1,000 yards. A new ergonomic design is 30% smaller than the Tour v3, making it even more convenient to carry. The Shift model compensates for a hole's incline or decline, a function that can be turned off for tournament play. Tour v4 Shift Model: Tour-trusted and patented Slope technology provides compensated distances based on incline/decline Slope-Switch Technology lets golfers easily toggle in and out of Bushnell's patented Slope function Now legal for tournament play when slope functionality is disabled PinSeeker Technology with JOLT: Tour-preferred technologies combine to eliminate all doubt from shot ranging Short vibrating bursts reinforce that the laser has locked onto the flag Tactile confirmation provides added confidence when executing shots Features: Engineered to deliver the unrivaled accuracy golfers have come to expect in a smaller, faster package Fast Focus System allows golfers to adjust the optic focus to ensure sight clarity and target accuracy Stabi-Grip Technology ensures a secure, comfortable grip during use Patriot Pack also includes carry case, protective skin and battery Portion of the proceeds donated to the Folds of Honor Foundation Manufacturer's Warranty: 2 Years Physical Dimensions: Size: 3.11" x 1.57" x 4" Weight: 6.6 oz.