The incredibly imaginative Fortis B-47 Calculator Limited Edition Watch (Ref. No. 669.10.31) includes a brilliant and handy analog calculator system that enables various types of calculations. This fantastic timepiece has a bidirectional bezel that allows you computation from division and multiplication to trigonometry. As if that was not enough, this immensely practical wristwatch for men also includes a useful Fahrenheit-to-Celsius table for effortless conversion.
The fine product by Fortis Watches is powered by an automatic Swiss ETA 2893-2 movement with 21 jewels. The high-quality self-winding mechanical movement features 28,800 semi-vibrations per hour and includes a fine timing device for precise adjustment. To make this watch additionally resilient, Fortis designers have also included the Incabloc shock absorber that guards the most stressed parts of the movement.
The extraordinary punctual and reliable movement is fitted into a round three-part case, made of brushed stainless steel. The diameter of its case is 47 mm and its thickness is 14 mm. On the screw-down case back of this great Limited Edition Fortis men’s watch theirs is an engraving with a temperature conversion table. All the case backs are also individually numbered (the Limited Edition consists of 2012 pieces, which is an homage to the company’s upcoming great jubilee of 100 years of successful watch making).
Multiple Calculations Available
The supreme Fortis B-47 Calculator Limited Edition Watch possesses two crowns with the Fortis logo. The real treat is the bezel of the watch, constructed of stainless steel. The bezel is bidirectional rotating and features a 60-minute scale (with 120 divisions) for a countdown function and with 24-hour GMT display.
The intricate matt black face of the Fortis B-47 Calculator Limited Edition Watch is protected with a sapphire crystal with anti-reflective treatment at both sides. The analog dial includes a flange with a calculator slide-rule scale, as well as luminous white hands, Arabic numerals and indices. It also has a white sweeping second hand and an orange GMT hand. A small date displayis set at the four o’clock position.
The fabulous Fortis B-47 Calculator timepiece enables you to keep track of time in three time zones. It also has a slide-rule function that allows 20 simple calculations, such as multiplication, divisions, multiple conversion, speed per hour, height calculations, fuel consumption or distance during ascent and descent.
There are five versions of this exceptional watch that feature different types of bracelets. The model 669.10.31 K (worth around $3,675) has a black rubber strap, whereas the variation 669.10.31 L 16 has a black leather strap with contrast stitching and a price tag of around $3,050. The model 669.10.31 M has a fine bracelet made of brushed steel and costs about $3,950. There are also two versions with silicone straps. The model 669.10.31 Si 02 has a white strap, and the fifth model 669.10.31 Si 20 includes an orange silicone strap.