Ballast mens trafalgar machined watch bl 3131 01 specifications brand ballast packaging ballast packaging case width approx 46mm case depth approx 14mm gender mens dial colour black date yes clasp type strap buckle case material stainless steel strap type genuine leather strap strap colour black water resistance 100 metres movement quartz chronograph no mpn bl 3131 01 guarantee ballast 2 year guarantee