This is the “Nomos Tangente” manual winding with Date and Power Reserve Indicator. It has the original 18mm Horween Shell Cordovan 21cm leather strap with the Nomos stainless steel tang buckle. The all Stainless steel case has an exhibition sapphire display of its beautiful movement, the steel case is engraved with the text: "GESCHUTZTES MODELL TANGENTE – EDELSTAHL – WASSERDICHT BIS 3 ATM," and a serial number. 63973. (131) The original wooden storage Box with the text “NOMOS GLASHüTTE” includes the service manual. Product name: Nomos Glashütte Model: Tangente Maker: Nomos Country: Germany Age 10 years, but never used, is still new Material: (Edelstahl), Stainless Steel Weight: 39.0 gram Size: 35.0 mm in diameter Bracelet: The NOMOS watch bracelet made from Horween Genuine Shell Cordovan is not only extremely durable, but also will develop an elegant patina. Year sold: 2014 Condition: Very good, never used and 10 years new condition This NOMOS, unused, wristwatch, will be carefully packaged and shipped via first class mail, including tracking information and insurance. More about Tangente Date Power Reserve The 35mm diameter solid three-body case, faceted angled lugs, and thin flat bezel, are polished. The dial is galvanized silver plate with painted black Arabic numeral markers on the even hours, and stick baton indices on the odds, around a perimeter black minute scale. It has thin pointed blued baton hands, and there is an extra large date aperture window at the 6 o'clock position. A recessed silver running small seconds subsidiary dial with black markers is above the date, and the 42-hour red and white circular power reserve indicator is at 12:30. It's water resistant to 30 meters/100 feet, and the 6.60mm thick case, dial, and movement are all signed. This Nomos Tangente Date Power Reserve (Gang reserve) 131 has a mechanical manual winding Nomos caliber DUW 4401 movement. It's made of German ¾ plate with Glashütte stripe embellishment, and Nomos pelage. It's constructed with 29 jewels, blued screws, a ratchet and crown wheel with Glashütte sunburst embellishment, a fine adjustment in 6 positions, an anti-shock device, and the power reserve mechanism is integrated in the barrel allowing the movement and the watch to be very thin. It includes a tempered blued balance spring, a stop seconds device for precision time setting, and the mechanism oscillates at a frequency of 21,600 vph (3 Hz). The Nomos Tangente Date Power Reserve (Gang reserve) 131 was introduced in 2017, and the DUW 4401 caliber is the first to feature the Nomos swing system escapement. The renowned, multiple prizewinning NOMOS Tangente, here with a patented power reserve indicator: A very practical (and often underappreciated) complication that shows when the caliber is running out of energy—similar to the fuel gauge in your car. The mechanism has been integrated into the mainspring barrel so that the watch remains slender and elegant.