Garmin Forerunner 310XT Waterproof USB Stick and Heart Rate Monitor, Gray/Orange
Garmin Forerunner 310XT Quick Release Kit
Amazon.com: C2D JOY Compatible with Garmin Forerunner 310XT Replacement Band with Quick Release Spring Bar and Tool, Sport Mesh Strap Nylon Weave Watchband for Sports & Outdoors - 10#, M (5.0-7.9in.) : Electronics
GPS Assessment: Garmin Forerunner 310XT vs. the 220
Amazon.com: Garmin Forerunner 310XT Waterproof Running GPS with USB ANT Stick : Electronics