Alpina's Extreme Solarmetre hides solar cells beneath a textured dial

The Alpiner Extreme Solarmetre signals Alpina's entry into solar-powered watches while keeping the angular, bolted-bezel personality of the Extreme line. Reference AL-140LN3AE6 wears a cool blue textured dial that disguises the photovoltaic technology beneath it, housed in a 37.50 × 38.90 mm stainless-steel case and accompanied by a coordinated patterned rubber strap.

Made in partnership with La Joux-Perret, the AL-140 solar quartz calibre needs only a minute of light exposure to store roughly one day's running energy. Fully charged, the watch can continue for as long as ten months in the dark. With its 100-metre water-resistance rating and listed Belgian price of €995, the collection presents solar power as a serious alternative within Swiss sports-watch design.