Snooper S320 Shotsaver uses the very lastest GPS technology to provide you with accurate positional information anywhere on the golf course. Our database gives you access to over 3000 courses. Shotsaver uses the most accurate GPS technology to provide you with distances to the front, back and middle of the green plus bunkers, fairways, streams, lakes plus many other hazards. You can also record how far you hit with each club and use units Electronic Scorecard to save the scores of up to four players. S320 comes with a built-in rechargeble battery capable of guiding you round the golf course for up to 10hrs!