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> Ahoi > Ahoi Ref. 550
Brand
NOMOS
Reference Number
Ahoi Ref. 550
Mechanism
Self-Winding
Collection
Ahoi
Case Material
Stainless Steel
Function
Hours, Minutes, Seconds
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Case:
Stainless steel, bipartite; sapphire crystal glass; diameter 40 mm; sapphire crystal glass back, height 10.64 mm; fixed with six screws; screw-down crown, crown guard.

Dial:
Galvanized, white silver-plated, hour indexes with superluminova.

Hands:
Hour and minute hand rhodium-plated and with superluminova inlay in light blue, seconds hand red lacquered.

Strap:
Textile strap black with winged clasp, lug width 20 mm.

Water-resistant to 20 atm (DIN 8310).

Reference number:
550.


Movement:
ε (Epsilon)—in-house built NOMOS caliber with automatic winding.

Diameter:
13 ¾ lines (31 mm).

Movement height:
4.3 mm.

Power reserve: Approx. 43 hours.

Characteristics:
Decentralized seconds, stop-seconds mechanism, Glashütte three-quarter plate, 26 rubies, Glashütte stopwork, bidirectional winding rotor, Incabloc shock protection, balance spring from Nivarox 1A, adjusted in six positions, tempered blue screws, rhodium-plated movement surfaces with Glashütte ribbing and NOMOS perlage, ratchet and duplex wheel with Glashütte sunburst.