Amazon.com: G-SAVR Lanyard/Tether/Leash, for Your Garmin Edge 200, 500, 510, 520, 800, 810, 1000, Also for Wahoo, Polar, Lezyne, Cateye, Sigma or Any Other Cycling Bike GPS Computer : Electronics
Silicone Protect Case + Safety Retractable Tether Steel Inside Stretch Coiled Lanyard for Handheld GPS Garmin Alpha 100 Alpha100|Phone Case & Covers| - AliExpress
Garmin Retractable Tether / Lanyard
Backpack Tether
G-Savr tether prevents your Garmin, GoPro learning to fly - Bikerumor
How to Install the Tether on an Edge Cycling Computer | Garmin Customer Support