As the brand to have registered the "Pilot" name for watches, Zenith has full legitimacy in this domain, as it again demonstrates with the Pilot Type 20 Extra Special Silver: the first Zenith watch to be cased in 925 sterling silver. The back of the case, measuring 45mm in diameter and water-resistant to 100 metres, gives a nod to the watch's origins with an engraving of the historic Zenith Flying Instruments logo. The large, ratcheted crown is another shout-out to vintage aviation watches. The brushed silver dial features a riveted motif, with large numerals and hands. Counting time is an Elite 679 movement that delivers 50 hours of power reserve.