The Garmin Speed Sensor 2 attaches to your wheel hub to measure riding speed and distance accurately, even indoors or where GPS is weak. It installs in seconds with no magnets or exposed parts, transmits over ANT+ and Bluetooth Low Energy, and can store data when you ride without your bike computer, syncing it automatically later.
| Type | Wheel-hub speed sensor |
| Connectivity | ANT+, Bluetooth Low Energy |
| Battery | Replaceable coin cell, up to 1 year |
| Installation | Tool-free, no magnets |