Put the "Smart" in Smart Goggle. This in-goggle display and activity tracker provides real-time feedback to help you refine your technique and get the most out of your swim. Once you're out of the water, the app gives in-depth analysis for goal setting, workout planning, personalized coaching, and recommendations to help you improve. The module fits right in your FINIS Smart Goggle, so no additional equipment to wear; no cables, no straps. Note the module is only equipped to fit the Smart Goggle. Goggle sold separately. 30-Day Returns and 1 Year Limited Warranty (2 years within the EU).