Garmin HRM 3-SS will connect/pair with forerunner 35 but will not show heart rate (see picture) - Accessories & Sensors - Running/Multisport - Garmin Forums
Garmin Heart Rate Transmitter and Strap,HRM3 SS, HRM4 Run, HRM Tri for Swimming Running Cycling Triathlon.|Bicycle Computer| - AliExpress
Garmin HRM- Pro Review - YouTube
Garmin HRM-Pro Heart Rate Monitor | Trek Bikes
Garmin HRM-Dual™ | Heart Rate Monitor with Chest Strap
Garmin HRM-TRI & HRM-SWIM In-Depth Review | DC Rainmaker
Week in Review–April 27th, 2013 | DC Rainmaker
Garmin HRM-Dual™ | Heart Rate Monitor with Chest Strap