Tissot Men's T066.427.11.047.00 Blue Dial Watch Automatic movement Case diameter: 48 mm Blue dial watch Durable sapphire crystal protects watch from scratchesWater resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours. Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours.