Sinn 903 ST BE Navigation Chronograph SS
Description
Sinn 903 ST BE Navigation Chronograph, stainless steel on a stainless steel bracelet, automatic movement, caliber SW500, date, chronograph, small seconds at 9 o'clock, blue dial, luminous stick indexes, luminous hands, display back, water resistant to 300m, sapphire crystal, diameter: 41mm, thickness: 14.5mm, like New with box and papers dated 12/2016.
Product price
SOLD
More about 903 ST BE Navigation Chronograph SS
This is a stainless steel Sinn Navigation Chronograph 903 ST BE. It has a stainless steel satinized link bracelet, and a scratch resistant sapphire crystal with anti-reflective coatings on both sides. It has round chronograph push buttons, a fluted domed screw-down winding crown, and a screw-down exhibition sapphire display anti-glare case back engraved around the satin perimeter with "SINN – 903 – NAVIGATIONSUHR – EDELSTHAHL – STOSS-SICHER – ANTIMAGNETISCH – WD. 10 BAR/100M." There is an additional crown at 10 o'clock on the left-side case band for mathematical operations that's utilized to rotate the slide rule bezel with its logarithmic scale. It also performs multiplication, division and cross-multiplication as well as fuel consumption, speed, distance and time calculations. The 41mm diameter solid three-body case, curved lugs, bracelet, and thin knurled bezel are polished/satinized. The dial is dark blue dial with applied luminous ivory baton hour markers, and a luminous Arabic numeral 12. It has luminous baton hands, a center sweep seconds hand with red and white arrow tips, and an inner minute/one-fifth second scale. The Interior black bezel has a logarithmic scale with slide rule functions with red accents, and around the perimeter is a white reserve. There is a date aperture window between 4 and 5 o'clock, and there are three white recessed cupped subsidiary dials, including a running small seconds indicator at 9 o'clock, a 12-hour chronograph totalizer at 6 o'clock, and there is a 30-minute register at the 3 o'clock position. It's water/pressure resistant to 300m/1000 feet (as per standard DIN 8310), and it has a 44-hour power reserve at full wind. The 14.5mm thick case, dial, and movement are all signed. This Sinn Navigation Chronograph 903 ST BE has a mechanical automatic self-winding caliber SW500 movement. It's rhodium plated, and constructed with 25 jewels, blued screws, a straight-line lever escapement, and a self-compensating flat balance spring. It's shock resistant as per DIN 8308, and the components are anti-magnetic as per DIN 8309. It has a hacking seconds device for precision time setting, and the mechanism oscillates at a frequency of 28,800 vph (4 Hz). The Sinn Navigation Chronograph 903 ST BE was introduced in 2015.
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