Garmin Forerunner 245 vs. 235: How using the Garmin 245 compares the 235 | SportTracks
Garmin Forerunner® 235 | Running Watch
Forerunner 230/235 - Wearing the Device and Heart Rate
Train smarter with the latest GPS running watches from Garmin – Introducing the Forerunner 230 and 235 and Garmin Elevate wrist heart rate technology - Garmin Blog