Indoor movie, with gear change sequences: 1-2-3, 3-2-1, 1-3, 3-1 – all while pedaling!
And on the road:
The first 100%-metal efneo prototype mounted to the bike (December 2012).
Other recommended videos:

why use gearbox? 
Indoor movie, with gear change sequences: 1-2-3, 3-2-1, 1-3, 3-1 – all while pedaling!
And on the road:
The first 100%-metal efneo prototype mounted to the bike (December 2012).
Other recommended videos:

why use gearbox? 
We are now focused on the clutch. This element is responsible for smooth and quick gear change. Some new ideas are tested. More details soon.
Our first prototype was made as a 32T version (it means the chainring has 32 teeth). This prototype is visible on all our photos and in movies. As the neutral gear is also the lowest gear we need to make it 24T to make it usable for most bikes. This version is coming soon :)