CatEye SPD-30

The SPD-30 uses an internal accelerometer to detect the rotation of your wheel hub. Because it measures movement directly from the hub rather than relying on a magnet passing a sensor on the frame, you get accurate speed and distance data without the hassle of aligning hardware.

The SPD-30 features dual-band connectivity, meaning it transmits data via both Bluetooth and ANT+. It is compatible with most modern cycling computers and smartphones that support these standard wireless protocols, as well as specific CatEye models like the Padrone Digital and Padrone Smart series.

Yes, the device carries an IPX7 waterproof rating. This means it is protected against immersion in water up to one meter deep for 30 minutes, so you can ride through heavy rain or puddles with confidence that the internal electronics remain sealed.

Installation is straightforward because there is no need to attach a magnet to your spokes or align a sensor on your chainstay. You simply secure the sensor to your wheel hub, and it is ready to pair with your device.

While the accelerometer handles the motion tracking, you should ensure your paired cycling computer or app is set to the correct wheel circumference. This ensures the speed and distance calculations remain accurate regardless of your specific tire setup.