Omega Seamaster Chromometer Electronic F300Hz Daydate Watch – This was Omegas first electronic chronometer. Known as the sand pile or cone due to its unusual shape, this watch is also distinctive in that it was originally water-resistand to 60-metres (but dont wear it in the shower now!) and it housed the iconic Omega 1260 “hummer” calibre. Called that because it hums and does so because it has a vibrating tuning fork inside powered by a battery. It vibrates at 300 (hence f300 Hz on the dial) times per second and when manufactured was accurate to 60 seconds per month – and it still is! Bullet-proof engineering. The case back is signed Omega and has the Omega sea monster. Omega signed crown for adjusting the time, day and date. The silver dial Great with no marks. Silver baton hands partly finished in deep black. Red sweep seconds hand. Fully functional day and date at 3. Signed Seamaster Chronometer and below is the applied Omega script and signed Electronic f300Hz. At 12 is the applied Omega logo set in red . Set on it original strap which is in good condition with a couple of marks and dings. Specifications Type – Casual/Luxury Condition – Great condition overall, case has minor surface scratching with the odd minor deeper scratch. Dial excellent. Original stamped crown. Sapphire glass has a couple of scratches but nothing to daunting, only visable in certain light and on some edges. Tested and keeping great time. Daydate function working as it should, pull out half way for the day/date changes wind clockwise for date change and anticlockwise for day change. Movement – Electronic f300Hz Case Material – Stainless steel Measurements – Case width excl. crown Approx – 41mm Case size lug-to-lug - 46.2m Thickness – 13.1mm Reduced to £450 from £495 payment by back transfer . Postage at cost price to buyer. As always thank for looking.