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iGPSPORT Help Center
Quick Start Guide
Tire / Wheel Size Chart
Cruise time of C61 or SPD61
Is it necessary to equip a a speed sensor?
What's the difference between SPD61 and C61?
How many speed sensors can a bike computer store?
Installing Speed Sensor SPD61
Installing Cadence Sensor C61
Replacing a New Battery for My Cycling Sensors
Get help with an issue
My cadence sensor C61 Can't Connect with My Devices From Other Brand.
My Speed Sensor SPD61 will not connect to My Cycling computer
My Speed Sensor is not providing accurate speed information