Men&rsquo;s Sports Watch | M50 Nylon Dive Watch by Momentum | Stainless Steel Watches for Men | Sapphire Crystal Analog Watch with Japanese Movement | Water Resistant (500M/1650FT) Classic Watch - Black / 1M-DV52B1B SOLID CONSTRUCTION: This watch is our toughest, bar none. With virtually scratchproof sapphire crystal the M50 is nearly bulletproof. CHOOSEN BY PROFFESIONALS: A waterproof rating of 500M / 1650FT makes this watch the choice of SWAT, police, and fire departments across North America. LONG LASTING PRECISION: This Mens rugged dive watch comes equipped with Japanese Quartz Movement and powered by a long life 10 year battery for precise time keeping. ULTRABRIGHT NIGHTVISION: The M50 mens dive watch by Momentum uses a bright superluminova dial so you can see even in the darkest night. IDEAL GIFT: The M50 DSS dive watch makes for a fantastic gift watch - whether its a birthday, anniversary, or a special occasion. It's sure to make whoever get's this outdoor sports watch ecstatic.