Side by side

Differs

A. Lange & Söhne 1815235.021

A. Lange & Söhne 1815

A. Lange & Söhne Lange 1191.021

A. Lange & Söhne Lange 1

General

Collection (differs): 1815; Lange 1
Status (differs): Discontinued; In production
Introduced (differs): 2014; 2015

Case

Shape: Round; Round
Diameter: 38.5 mm; 38.5 mm
Thickness (differs): 8.8 mm; 9.8 mm
Lug width: 20 mm; 20 mm
Material: 18k yellow gold; 18k yellow gold
Caseback: Display (sapphire); Display (sapphire)
Crystal: Sapphire; Sapphire
Water resistance: 30 m; 30 m

Movement

Calibre (differs): A. Lange & Söhne L051.1; A. Lange & Söhne L121.1
Type: Manual winding; Manual winding
Origin: In-house; In-house
Power reserve (differs): 55 h; 72 h
Frequency: 21,600 vph (3 Hz); 21,600 vph (3 Hz)
Jewels (differs): 23; 43
Functions (differs): Hours
Minutes
Small seconds; Outsize date
Power-reserve indicator
Complications (differs): Small seconds; Big date
Power reserve indicator
Small seconds

Dial

Colour (differs): Silver; Ivory silver
Material: Solid silver; Solid silver
Indices (differs): Arabic numerals; Mixed
Hands: Alpha; Alpha

Bracelet

Type: Leather strap; Leather strap
Clasp: Pin buckle, 18k yellow gold; Pin buckle, 18k yellow gold
Strap colour: Middle Brown; Middle Brown