Replacement Speedometer & Heart Rate Monitor for Stationary Exercise Bikes – Compatible with 3.5mm Jack (1/8" TS Sleeve Cable) — Open-Box, 28% Off

Standard 3.5mm Connection: Plugs into 3.5mm female jacks on the back of the monitor. Some bikes with female jacks may require adapters (not included).

【ZERO Accuracy WARNING】monitors LIKE this one ESTIMATE speed and distance based on cadence (pedal RPM) rather than actual mileage. Since stationary bikes do NOT measure resistance levels, the displayed KM reading is a CALCULATED estimate rather than a precise measurement. Unlike real bikes with gears, stationary bikes cannot determine actual distance traveled. All data is GUESSED and based on your cadence rate (frequency of pedals). Please use this as a timer ONLY.

Battery Requirement: customers need to get 2 x AAA batteries (not included)

Heart Rate Monitoring (Optional): Works with bikes featuring built-in pulse sensors (typically two metal plates on the handlebars). Certain models may require re-wiring for compatibility. Disclaimer: it will never be accurate as your Apple watches.

Designed for compatibility with most stationary and spin bikes that use a 3.5mm headphone-style jack for speed and pulse tracking. Compatible with major brands like Sunny, PooBoo, L-Now, Snode, Exerpeutic, Yosuda, and many more—covering approximately 90% of Amazon and domestic brands. Important Accuracy Information: this monitor estimates speed and distance based on cadence (pedal RPM) rather than actual mileage. Since stationary bikes do NOT measure resistance levels, the displayed KM reading is a calculated estimate rather than a precise measurement. Unlike real bikes with gears, stationary bikes cannot determine actual distance traveled. All data is gussed and based on cadence (frequency of pedals) 📌 Think of this as a cadence tracker that helps monitor pedaling speed over time, rather than an exact speedometer or odometer.