Movement rotor-lock with on/off switch - Amortisér Movement can withstand 5.2 meters free fall without damage 7,500Gs shock resistance Patented crown protection system Self-powered micro gas lights on hands and dial that glow for up to 25 years -40 degree Celsius temperature endurance 4,800A/m Anti-magnetic 100m water resistance Mechanical lock resists 1,400 Newtons of force BALL Watch USA www.ballwatch.com Tel:727-896-4278 (see web site for complete list of Authorized BALL dealers) Berger and Son Jewelers Fashion Show Mall | 3200 S. Las Vegas Blvd. #1165 | Las Vegas, NV 89109 702-737-7118 | www.bergerandson.comhttp://www.ballwatch.com http://www.ballwatch.com http://www.bergerandson.com http://www.bergerandson.com