Alpina mens seastrong diver 300 chronograph watch al 372lbbrg4v6 specifications brand alpina packaging alpina packaging case width approx 44mm 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 300 metres movement swiss quartz chronograph yes mpn al 372lbbrg4v6 guarantee alpina 2 year