Features: case/bezel material: ip stainless steel black ip stainless steel bracelet quartz movement mineral crystal black dial analog display chronograph function 1/10-second stopwatch date display regular timekeeping accuracy: ±20 seconds per month luminous hands and indexes 12/24 hours display screw case back three fold clasp with push button release 100m water resistance approximate size of case : 48.5 × 43.8 × 12.1mm