It is designed for self-powered energy. With your movement, you generate the energy required for the screen and the sleek lighting of the disc. There is no need for a power supply, tangled wires, or restrictive sockets. You have the power and freedom to exercise anywhere in your space.

The built-in computer of the C-21x provides real-time workout data, such as speed, time, distance, calories, heart rate, and RPM. With the included chest sensor, you can also monitor your heart rate and receive accurate performance data, allowing you to track your progress (only with bike connection). Additionally, the console features an integrated holder for tablets and smartphones, so you can easily watch video content while cycling.

You can easily and quickly adjust the height of the saddle and its distance from the handlebars to bring it to the right position according to your body type. The height adjustment of the saddle is easily set between 77 and 92 cm and along a range of 17 cm.

Also, bring the handlebars to your measurements by adjusting the height within a range of 19 cm and the length within a range of 8 cm.

Zone 1

This is the zone between the 12 and 5 o'clock positions. Ideally, point your ankle 20 degrees downward in this zone.

Zone 2

This is the transition zone. Tighten your calf so that you point your toes 20 degrees upward (as if wiping dirt off your heel) but keep your foot steady on the pedal.

Zone 3

The foot is lifted by the momentum of the pedal and without significant weight on the muscles, so you don't lose power.

Zone 4

Return to the downward motion of Zone 1 at the 12 o'clock position. Do not wait for the 3 o'clock position (as many do) because you will lose momentum and power.