Callaway GPSy Golf GPS Watch Preloaded with over 30,000 golf courses worldwide; No annual fees or subscriptions required Accurate distances to front, center, and back of green as well as layup and carry distances to back of hazards and doglegs Scorekeeper tracks scores, GIR, and putts per round; Auto-course recognition; Auto-hole advance; Shot distance measurement Analog and digital time display. Time and date automatically set by satellite Battery lasts 10-12 hours in GPS mode. 90 plus days battery life in time mode Display size: 1.28-Inch, Dimensions: 10.25 x 1.5 x 0.5-Inches & Weight: 2.24 oz.