B07XHLF7TV Garmin Swim 2, GPS Swimming Smartwatch for Pool and Open Water, Underwater Heart Rate, Records Distance, Pace, Stroke Count and Type, Slate Gray

Monitors underwater estimated wrist-based heart rate during swim activities
Pool swim mode: records distance, pace, stroke count, stroke type and SWOLF (gauges swimming efficiency)
Open-water swim mode: uses built-in GPS for swims in lakes, oceans or rivers; records distance, pace, stroke count, SWOLF, stroke rate and stroke distance
Offers advanced features for staying on pace, logging drills and more
Includes free online analysis, custom workout creation, storage and sharing on Garmin Connect online community
Connected features (paired with a compatible smartphone) include smart notifications and automatic uploads to our Garmin Connect online community
Battery life: up to 7 days in smartwatch mode, 13 hours in GPS and optical heart rate (ohr) mode and 72 hours in pool and ohr mode