Features: Improved shot-detection software Light, low profile sensors that record every shot you make Long lasting battery designed to last five years with no charging and backed by a 2-year guarantee Compatible with iPhone and Android devices Additional features of Arccos 360: Power saving mode Access to Arccos Caddie app upgrades What's Included: 14 ultralight sensors (13 standard, 1 putter) Access to free iOS and Android apps Includes 1-year subscription valued at US $199.99 starting from the date the sensors are activated. After 1-year you will be auto-billed US $199.99 per year. 30-day, money back guarantee