IWC (International Watch Co) is celebrating its third year of collaborating with the Tribeca Film Festival by auctioning off a unique timepiece, and all proceeds go to the Tribeca Film Institute. The watch is a monopusher mechanical chronograph. By pressing the pusher twice, it starts and stops the timing function of the chronograph, while a third push resets the hands to zero, this is the first of its kind. The Portofino Monopusher will be auctioned online by Christie’s between April 1 and April 10. For further details on this timepiece, head over to the IWC official website.