Armitron Men's 20/5148BLSV Multi-Function Dial Silver-Tone Bracelet Watch Mineral crystal lens; black reflector ring with blue printed Tachymeter; matte black dial with day, date and 24 hour sub dials; silver-tone luminous hands and markers; printed outer minute track Silver-tone adjustable link bracelet; fold over push-button clasp with safety Japanese-quartz Movement Case Diameter: 44mm Water resistant to 50m (165ft:in general, suitable for short periods of recreational swimming, but not diving or snorkeling