Short version: Wahoo’s RPM Cadence Sensor is still on sale and works with Bluetooth and ANT+. The old RPM Speed Sensor listing on Amazon no longer has a buy box; Wahoo’s newer TRACKR Speed Sensor is the speed sensor you can order there now. Get both for indoor and outdoor training data.
As an Amazon Associate I earn from qualifying purchases. This post contains affiliate links, so The Funny Beaver may earn a commission if you buy through them, at no extra cost to you.
Cadence (how fast you pedal) and speed sensors are the cheapest way to train smarter, indoors on a trainer or outside without GPS drift. Here’s what we found, based on retailer spec pages and the listings (we didn’t test them hands-on).
| Spec | RPM Cadence Sensor |
|---|---|
| Connectivity | Bluetooth and ANT+ |
| Battery | Replaceable CR2032, up to 12 months |
| Weight | 7 g |
| Water resistance | IPX7 |
Specs from Pushys’ RPM Cadence page, the TRACKR Speed listing on Amazon. Checked October 2026.
What matters in real use
- Cadence for training, speed for accuracy. Speed sensors keep indoor and tree-covered rides accurate.
- Dual Bluetooth and ANT+ pairs with Zwift, bike computers and phones.
- Coin-cell battery. Swap it yearly; no charging cable to lose.
- No magnets on the cadence sensor, so installation takes a minute.
Gift it to: the cyclist who just bought a smart trainer, or anyone training for a first century ride.
Check Price on Amazon