GPS or Navigation System: Garmin GSC 10 Speed/Cadence Bike Sensor - Garmin

Sports: Wahoo Blue SC Cycling Speed & Cadence Sensor for iPhone and Android - Wahoo Fitness

Sports: Polar 91037386 Speed Sensor W.I.N.D. Heart Rate Monitor with Universal Bike Mount - Polar

Sports: Polar CS Series Speed Sensor Set - Polar

Sports: Timex Global Trainer Bike Speed/Cadence Sensor - Timex

Automotive Parts and Accessories: Dakota Digital Transmission Speed Sensor for Dakota 6000 Series SEN-6017 - Dakota Digital

Sports: Wahoo Fitness Speed & Cadence Sensor for iPhone - Wahoo Fitness

Sports: CatEye Cycle Computer Universal Wheel Magnet - Cateye (Boulder,CO)

Sports: LCD Cycling Bike Bicycle Cycle Computer Odometer Speedometer Waterproof 548C - Generic

Sports: Jarv Bluetooth 4.0 Cycling Speed and Cadence Bike Sensor for IPhone 4S, IPhone 5/5C/5S , new IPod touch and other iOS Bluetooth devices- Black - Jarv

Wireless: iBike GPS Plus-Bike Computer (Case/Mount/App/Sensor) GPS-Based Cycling Measurements - iBike

Sports: Polar Speed Sensor W.I.N.D. - Polar

Sports: Runtastic Speed and Cadence Bike Sensor with Bluetooth Smart Technology - Runtastic

GPS or Navigation System: Garmin Replacement Parts for Speed Cadence Sensor - Garmin

Automotive Parts and Accessories: Trail Tech (200-05) Endurance Speed Sensor - Trail Tech

Mobile Application: SkateBoarding 3D Free Top Skate Action Board Game - Sulaba Inc

eBooks: Fun Physics Projects for Tomorrows Rocket Scientists: A Thames and Kosmos Book - McGraw-Hill/TAB Electronics

Toy: 8 Speed Universal LED Digital Gear Indicator Motorcycle Display Shift Lever Sensor - cth

Sports: Polar CS Series Cadence Sensor - Polar

The above is "Polar S-Series Speed Sensor And Bike Mount - Speed Sensor For Spin Bike - Speed Sensor Bike" recommended related products, Please click on the picture to see product details and speed sensor bike reviews!