The Alpina Mens Seastrong Diver 300 Navy Dial AL-525LNN4TV6 watch combines a 44mm round shaped stainless steel case and blue leather strap with a traditional buckle. It has a blue analogue dial which is protected beneath scratch resistant sapphire crystal glass on both sides of the case. Power is generated by the automatic movement. This model also has a water resistance of up to 100 metres.