Alpina has an extensive tradition and history in the manufacture of sports and extreme use watches, the firm expresses all its Savoir Afaire in this field with the powerful Seastrong line, this reference has Automatic and Quartz movements, very technical and advanced in its super architecture. direct descendant of the Extreme Avalanche that has given so much success to the firm, now modernized the entire line is submersible to 300M ISO6425 with Titanium nitride pvd treatment, which increases the mechanical properties of the metal more resistant to impacts and scratches, Additionally, in the Quartz versions, the GMT function is added, very useful for the most adventurous and travelers who constantly find themselves in different time zones. A true professional diver.