Cateye OHR-31 Heart Rate Sensor
Best chest-strap alternative for cyclists seeking comfortable, reliable heart rate tracking.
Ditch the restrictive chest strap for an optical sensor that sits comfortably on your arm. It pairs effortlessly with your existing cycling computer and phone, trading the pinpoint precision of an EKG-style strap for significantly better comfort and ease of use during long, sweaty rides.
$54.95
at
Cateye
Who it's for
- Cyclists seeking relief from restrictive chest straps
- Riders needing seamless integration with multiple devices and apps
- Endurance athletes tracking steady-state heart rate data
Who should skip it
- High-intensity interval trainers needing precise, uninterrupted data
- Users who prefer a set-and-forget wearable experience
- Commuters who dislike managing frequent charging schedules
Performance breakdown
Connectivity Versatility
Dual-band Bluetooth and ANT+ ensures pairing with virtually any modern device.
Comfort & Ergonomics
Multiple armband sizes provide a secure, personalized fit for any wrist.
Battery Endurance
Twenty-four hours of runtime covers even the longest weekend training sessions.
Weather Resistance
IPX7 rating keeps the sensor protected during heavy rain and mud.
Ease of Integration
Seamlessly syncs with the Cateye Cycling app for instant data visualization.
Form Factor
Compact design eliminates the discomfort of traditional, bulky chest straps.
Key Specs
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Bluetooth® 5.0 / ANT+
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Optical LED
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40-220 bpm (±5 bpm)
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1-49/64" x 1-19/64" x 15/32" (45 × 33 × 12 mm)
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0.39 ounces (11 grams) (Excluding the arm band)
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IPX7
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Ask Metto anything about the Cateye OHR-31 Heart Rate Sensor before you decide.