Side by side

Differs

Grand Seiko HeritageSBGH353

Grand Seiko Heritage

Zenith Chronomaster Open03.3300.3604/51

Zenith Chronomaster Open

General

Collection (differs): Heritage; El Primero
Status: In production; Not known
Introduced: Not known; 2022
Nickname: Shubun; Not known
Retail price: US$7,500; Not known

Case

Shape: Not known; Round
Diameter (differs): 40 mm; 39.5 mm
Thickness: 12.9 mm; Not known
Lug to lug: 47 mm; Not known
Lug width: 21 mm; Not known
Material: Stainless steel; Stainless steel
Caseback: Display (sapphire); Display (sapphire)
Crystal (differs): Sapphire, Box, Anti-reflective inside; Sapphire
Crown: Screw-down; Not known
Water resistance: 100 m; 100 m
Weight: 155 g; Not known

Movement

Calibre (differs): Grand Seiko 9S85; Zenith El Primero 3604
Type: Automatic; Automatic
Origin: In-house; Not known
Power reserve (differs): 55 h; 60 h
Frequency: 36,000 vph (5 Hz); 36,000 vph (5 Hz)
Jewels (differs): 37; 35
Functions (differs): Screw-down crown
37 jewels; Chronograph
Column wheel
Hours
Minutes
Small seconds
Complications: Not known; Chronograph
Small seconds

Dial

Colour (differs): Deep blue; Blue
Pattern: Not known; Sunburst
Indices: Not known; Mixed
Hands: Not known; Baton

Bracelet

Type: Metal bracelet; Not known
Material: Stainless steel; Not known
Clasp: Folding clasp; Not known