SERIAL AND FRAME NUMBERS 

Next Generation Atom - This starts with 261 and can be found on the back frame of the Atom.

First Generation Atom - This starts with 260 and can be found on the back frame of the Atom underneath where the adapter connects.

Pro/Trainer - This starts with 220 and can be found on the bottom right-hand side of the Wattbike frame underneath the magnetic resistance.

AtomX - This starts with 300 and can be found on the back frame of your AtomX.

Nucleus - This starts with 290 and can be found on the bottom right-hand side of the Wattbike frame underneath the magnetic resistance.