Zulu' YES Watch with a black PVD plated solid titanium case and bracelet and a sapphire crystal. Additional leather and rubber straps are included as well as tools for changing the straps and sizing the link bracelet. Includes daily sunrise/sunset, moonphase, moonrise/moonset data as well as time, perpetual calendar date that automatically adjusts for daylight savings, alarm with snooze, stopwatch, 9999 day countdown timer, 2nd time zone and LED backlighting. For a more complete explanation of all the functions of YES Watches, please visit our 'How Yes watches work' page.