Self-described watch geek Philipp Man noticed that here was no secure online marketplace for new and pre-owned luxury watches. So he launched his own: Chronext. Subscribe to FORBES: www.youtube.com/user/Forbes?sub_confirmation=1 Stay Connected Forbes on Facebook: fb.com/forbes Forbes Video on Twitter: www.twitter.com/forbesvideo Forbes Video on Instagram: instagram.com/forbesvideo More From Forbes: forbes.com Forbes covers the intersection of entrepreneurship, wealth, technology, business and lifestyle with a focus on people and success.