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> Tangente > Tangente Datum Gangreserve Ref. 131
Brand
NOMOS
Reference Number
Tangente Datum Gangreserve Ref. 131
Mechanism
Manually Wound
Collection
Tangente
Case Material
Stainless Steel
Function
Date and Seconds Hand
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Case
stainless steel, tripartite; sapphire crystal glass; diameter 35 mm; steel back: height 6.2 mm; sapphire crystal glass back: height 6.6 mm

Dial
galvanized, white silver-plated

Hands
steel, tempered blue

Strap
Horween Genuine Shell Cordovan black, lug width 18 mm

Water-resistant
to 3 atm

Reference number
169 (closed back), 131 (with sapphire crystal glass back)
Movement

DUW 4401—in-house built NOMOS caliber with manual winding, date and power reserve indicator; NOMOS swing system with tempered blue balance spring. (DUW stands for NOMOS Glashütte Deutsche Uhrenwerke.)

Diameter
14 ¼ lines (32.1 mm) including movement holder

Movement height
2.8 mm

Power reserve
approx. 42 hours

Characteristics
Decentralized seconds, date indicator, patented power reserve indicator, stop-seconds mechanism, Glashütte three-quarter plate, 23 rubies, Glashütte stopwork, Incabloc shock protection, adjusted in six positions, tempered blue screws, rhodium-plated movement surfaces with Glashütte ribbing and NOMOS perlage, ratchet and crown wheel with Glashütte sunburst