Originally Posted by
TheRealDrPhil
How does a three-speed fixed work? If the gears are in the hub, how does the hub change gears in both directions of chain motion (a defining element of a fixed gear bike)?
Definitely a fixed gear bike. 3 speeds. Sturmey archer S3X hub. Not the first of it's kind either, SA made somenother multiple speed fixed gear hubs in the 40s and 50s. If engaged, can pedal backwards, though this is not recommended for longevity.
https://www.sheldonbrown.com/asc.html
Edit: Uses a indexed gear shifter, can be bar end mounted, or on downtube boss as I use it. They also made handlebar mount thumb shifter as well.