This citizen eco drive perpetual calendar alarm chronograph with day date is radio controlled in 5 time zones has a 1 second chronograph measuring up to 60 minutes 1224 hour time and features a non reflective sapphire glass water resistant to 200 metresmovement eco drive e650 atomic timekeeping radio controlledfunctions perpetual calendar chronograph 1 second chronograph power reserve indicator alarm day date militaryband stainless steel bracelet fold over clasp with hidden do