Tangomat ruthenium date

Back: sapphire crystal glass back. Caliber: ZETA. Winding Mechanism: automatic winding. Case Size: 38.3 mm. Case Height: 8.30 mm. Power Reserve: 42h. Water-Resistance: 3 atm. Strap: Horween Genuine Shell Cordovan. Strap Color: black. Lug Width: 20 mm. Strap Length: M - 118/75. Clasp: NOMOS buckle clasp, stainless steel. Clasp Width: 18 mm . Dial Color: galvanized. ruthenium-plated. Numerals: arabic. Special Features: back fixed with six screws