The 26" bikes were available with 1, 2 or 3 speeds. The 3 speeds had caliper brakes, the single and 2 speeds had coaster brakes. I believe the 24" bikes didn't offer 3 speeds. The earlier 2 speeds were manual and would have one cable to change speed, the later automatics changed gear by back-pedaling ("kickback") and didn't use any cables. If your hub has 3 red bands around the middle it's an automatic, 1 band means it's a single speed. The torque arm also was stamped "Automatic" on the 2 speeds.