Features: case/bezel material: stainless steel stainless steel bracelet quartz movement mineral crystal black dial analog display chronograph function countdown bezel 1/10 second stopwatch accuracy: ±20 seconds per month regular timekeeping approximate battery life: 3 years luminous hands date display rotating bezel three fold clasp with push button release 100m water resistance approximate case size of case : 49.3 × 43.2 × 11.7mm