I haven't used Garmin Swim or Swimmate.
I've got a Forerunner 920xt (the uber triathlon Garmin). Works perfectly for me but ££££.
Local pool has Swimtag, which is just as good (but doesn't do HR if you wanted that).
@Greenbank started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I haven't used Garmin Swim or Swimmate.
I've got a Forerunner 920xt (the uber triathlon Garmin). Works perfectly for me but ££££.
Local pool has Swimtag, which is just as good (but doesn't do HR if you wanted that).