FEATURES: Wearable shot-tracking device that seamlessly connects with Arccos Caddie sensors and the Arccos Caddie app Automatically records shot data removing the need to carry a phone during play Hole Location Marking functionality includes the ability for a player to mark the hole location by simply pushing the main button while standing next to the pin Compatible with iPhone and Android devices Can be clipped to a player's waistband, belt, or pocket Functions independently of the phone, transfers data either during or after a round, based on player preference Weather-resistant design Battery life of up to 10 hours Quickly charges via a standard micro USB cable (included) Small and lightweight, less than 25 grams Dimensions: 5.7cm (L) x 3.1cm (W) x 1.9cm (D) Arccos Caddie Link is not compatible with 1st generation products, including Arccos Driver and Bluetooth putter sensors Arccos Caddie sensors (sold separately) are required to use Link