GoLuk T1 and T3 Camera Differences

The main difference between the T1 and the T3 is in the tech specs (different processor, sensor and most importantly, the T3 has a super capacitor as opposed to the lithium battery like the T1, so the T3 performs better in parking security mode and is more durable).

You can find more information on model comparison here: http://en.goluk.com/pages/comparison.html