What is difference between Hidoes B3 and B6?

There are two main differences between Hidoes B3 and B6 electric bike.

1. Wheel size

The Hidoes B3 tire size is 26"x4", and the B6 tire size is 20"x4".

2. Battery removable.

The B3 battery is not removable, but the B6 battery can be removed from the bike.