SkyGolf SkyCaddie SGXw GPS Unmatched accuracy meets the convenience of wireless connectivity Optical finger navigation for precise distance and target selection letting you get exact distances to any point on the golf hole New RangeVueTM feature shows range rings on HoleVueTM to aid in quicker club selection Wi-Fi enabled for convenient access to the most reliable course information--no computer needed Brilliant outdoor readable 3-inch TFT LCD display; powerful high-precision 50 channel gps receiver Preloaded with up to 30,000 courses ready to play with basic green information 30-day satisfaction guarantee