AIM Magnetic Speed Sensor - 719 Connector Protective Gear Its generous memory lets you

Its generous memory lets you quickly see best laps and scroll through all of the laps to review the race

but don't have a compatible vehicle

The AIM SmartyCam External Power cable accessory attaches directly to the SmartyCam's CAN port and allows for the connection of an external 12v power source

Starting with the AIM Solo 2

AIM Magnetic Speed Sensor - 719 Connector Protective Gear Its generous memory lets youDesigned to be mounted directly to the vehicle spindle or hub carrier, the AIM Magnetic Speed Sensor includes a trigger magnet that attaches the wheel or brake rotor. Connects directly to an AIM Data System via the standard 719 connector.