Callaway eCLIPse GPS Pre-loaded with 30,000+ worldwide courses; no subscription or download fees Displays distances to front/center/back of green; and layup/carry distances to hazards and doglegs Unique reversible/removable clip design delivers the ultimate in wear ability, usability and versatility Other features include auto course recognition; auto hole advance; shot distance measurement; odometer Rechargeable lithium-ion battery lasts 10-12 hours in GPS mode; 90+ days in time mode