Victorinox Swiss Army Men's 'Alpnach' Swiss Quartz Stainless Steel Casual Watch, Color:Silver-Toned (Model: 241196) Date, chronograph, tachymeter timer Unidirectional rotating bezel Tachymeter scale, 46 hour power reserve Case diameter: 41 mm Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving