Side by side

Differs

Longines Spirit Zulu TimeL3.812.4.93

Longines Spirit Zulu Time

Longines Spirit FlybackL3.821.4.93

Longines Spirit Flyback

General

Status: In production; In production
Introduced (differs): 2022; 2023
Retail price (differs): US$3,450; US$5,000

Case

Shape: Round; Round
Diameter: 42 mm; 42 mm
Thickness (differs): 14.1 mm; 17 mm
Lug to lug (differs): 49.4 mm; 49.5 mm
Lug width: 22 mm; 22 mm
Material: Stainless steel; Stainless steel
Bezel: Bidirectional rotating; Bidirectional rotating
Caseback (differs): Solid; Display (sapphire)
Crystal: Sapphire, Anti-reflective on both sides; Sapphire, Anti-reflective on both sides
Crown: Screw-down; Screw-down
Water resistance: 100 m; 100 m
Weight (differs): 113.2 g; 127.4 g

Movement

Calibre (differs): Longines L844.4; Longines L791.4
Type: Automatic; Automatic
Power reserve (differs): 72 h; 68 h
Frequency (differs): 25,200 vph (3.5 Hz); 28,800 vph (4 Hz)
Jewels (differs): 21; 28
Certification: COSC; COSC
Functions (differs): Hours, minutes, seconds and date. 24 hours hand with time zone mechanism; Hours, minutes, small seconds at 9 o'clock
Chronograph mechanism: central 60 seconds hand and 30 minutes counter at 3 o'clock
Complications (differs): Date
GMT / second time zone; Chronograph
Flyback chronograph
Small seconds

Dial

Colour: Blue; Blue
Pattern: Sunburst; Sunburst
Indices: Applied, Arabic numerals; Applied, Arabic numerals
Hands: Baton; Baton
Lume: Super-LumiNova; Super-LumiNova

Bracelet

Type (differs): Leather strap; Textile strap
Material: Stainless steel; Stainless steel
Clasp: Folding clasp; Folding clasp
Strap colour: Blue; Blue