Consistent with 10ATM water-resistance classification (up to 100m of water for up to 10 minutes) and IP68 rating (up to 6 feet of water for up to 30 minutes). Rinse residue / dry after wet. ²Galaxy AI features track data and requires compatible Samsung Galaxy phone, Samsung Health app and Samsung Account. ³Available for outdoor running and cycling only. Must follow the same starting point and path as a workout selected from up to 14 days prior. ⁴The heart rate software functions are not intended for medical use. ⁵Requires compatible smartphone. ⁶Requires network connection to notify emergency contact. GPS accuracy may be affected by obstructions to satellite signal such as buildings. ⁷To activate press Quick Button for 5 seconds; to deactivate press for 3 seconds. ⁸Based on typical use; results may vary. ¹⁰GPS accuracy may be affected by weather, atmosphere and other obstructions such as buildings and tall trees. ¹¹Track Back feature leads back to the start of trail for hiking or cycling. Option is only available if you have tracked your route. ¹²Must wear device for 7 nights during a 30 night period. ¹³The Sleep Apnea Feature is an over-the-counter (OTC) software-only, mobile medical application operating on a compatible Samsung Galaxy Watch and phone. This feature is intended to detect signs of moderate to severe obstructive sleep apnea in the form of significant breathing disruptions in adult users 22 years and older, over a two-night monitoring period. It is intended for on-demand use. This feature is not intended for users who have previously been diagnosed with sleep apnea. Users should not use this feature to replace traditional methods of diagnosis and treatment by a qualified clinician. The data provided by this device is also not intended to assist clinicians in diagnosing sleep disorders.