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