In 1929, US Navy Captain Phillip Van Horn Weems in conjunction with Longines developed "Weems Second-Setting Watch" for nautical navigation. Charles Lindbergh decided to update and improve Weems watch based on his experience of flying over the Atlantic. On par with Patek Philippe, Longines is famous as producer of best chronograph movements. Movement: - self-winding calibre L674.5 - base: ETA-Valjoux 7750, famous super-reliable "workhorse" - power-reserve: 42 hours - jewels: 25 - frequency: 28.800vph Case: - 316L-stainless-steel, polished - 41mm excl. crown, 46mm incl. - 14,5mm thick - unique limited No 1734 Case-back: transparent Dial: - aged silver - blued hands - vintage Arabic numerals - minute markers and tachymetre around outer rim - date and weekday at 03:00 o'clock - three chronograph sub-dials: 12-hours at 06:00 o'clock 30-min. counter at 09:00 o'clock 60-sec. at 12:00 o'clock Crown: - special chic shape - pull/push Bezel: polished stainless-steel, fixed Crystal: scratch-resistant, anti-reflective sapphire Strap: - brand-new genuine black leather, alligator grain on cow - length 21cm - width 22mm Pin-buckle with logo Water-resistant, not for swimming Weight: 84 grams Excellent condition, inside/outside like BRAND-NEW! DREAM of every REAL CONNOISSEUR! General overhaul done right now. My personal warranty 1 year, approved by Catawiki. Insured, registered shipping worldwide.