Garmin's got your game with Approach(R) CT1, the golf club tracking tags that offer advanced shot data. The lightweight and secure sensors easily attach to the end of the club's grip. Just "tap" the tag to your compatible Garmin golf watch before each shot, then open the Garmin Golf(TM) app to review and analyze your metrics after your round. FEATURES Lightweight and secure sensors easily attach to the end of the club's grip Pairs with compatible Garmin golf smartwatches to track every stroke, including locations, distances and club type when "tapped" to your watch Collects data from each club - from your driver to your putter See how far you typically hit that club, plus view stats for accuracy to the fairway or green Use the Garmin Golf(TM) app to see strokes gained analysis for each part of your game and follow trends over time so you know where to focus for improvement Battery-free means no need to charge WHAT'S INCLUDED Approach CT1 golf club tracking system (includes 16 tags) Product manual and documentation SPECIFICATIONS Dimensions (without screw): 0.8" diameter x 0.2" H Dimensions (with screw): 0.8" diameter x 0.9" H Weight: 0.07 oz (2g)