What Is The Difference Between The GP And The GP PRO?

In terms of stabilization performance and build quality both the GP and GP-PRO are on par with one another.

Here are some features the GP-Pro has that the GP does not:

1. GP-Pro has a 1/4-20 threaded battery cap on the handle which allows you to mount the gimbal to an extension pole set, tripod or standard mono-pod. Power button is located on side of handle
2. It has a 4-way thumbstick which allows more precise 'feathering' tilt control of the pitch, roll and pan axis. In the 'lock mode' you can manually control the left to right panning with the thumbstick - something you can't do with the GP as it has standard toggle buttons for tilt control.
3. The GP-Pro also has an option to pass the A/V signal from the GoPro to the 3.5mm output port on the handle. This can be used to feed a signal to an external field monitor.
4. The GP-Pro also has upgraded position encoders and motors.
5. The GP-Pro is compatible with the Hero 5 Black or Hero 5 Black Session.