The Alpina Shadow Line collection contains products of various model lines, in which we can find mechanical (automatic) and quartz machines, which, however, have two basic features in common. On the one hand, it is a specific, very attractive darkdesign of cases, straps and dials, and on the other hand, it is the use of a unique E-Strap strap. Thanks to a special chip on the strap clip, it allows you to use many functions, typical of the Horogical Smartwatch category, ie smart watches, thanks to communication with a smartphone. Randomly, it is about activity monitoring, sleep monitoring, or adaptive coaching. The ideal choice for anyone who wants to wear a classic mechanical or quartz watch on their wrist and at the same time wants to taste modernity in the form of using the functions of a smart watch!