Based on ETA’s 902 series specifications and related models, the 902.105 is likely a compact quartz movement designed for slim, minimalist timepieces. Here’s a reasonable overview of its potential features:
Basic Attributes: It is presumably an analog-display quartz movement, likely powered by a Renata R321 (321/SR616SW) battery—consistent with other 902 series models. This configuration would likely offer extended battery life, potentially 100-120 months under normal use, reducing maintenance frequency.
Dimension Specifications: Following the series’ design, it probably has a compact footprint with a diameter around 13 x 15.15 mm and a core thickness of approximately 2.4 mm. This slim profile makes it suitable for ultra-thin watch cases, particularly delicate or small-sized designs.
Height Configurations: It may offer multiple overall height options (such as HCP 0, standard, HCP 3) to 适配不同表壳需求，with heights likely ranging from 3.20 mm to 3.92 mm, ensuring compatibility with diverse watch designs.
Functional Features: Likely retaining a 2-hand (hour and minute) design, emphasizing simplicity by omitting a second hand. This minimalist approach aligns with watches prioritizing clean aesthetics and slim profiles.
Internal Configuration: It might contain 3-4 synthetic jewel bearings to reduce friction between components, ensuring stable operation and reliable timekeeping over extended periods.
Application Scope: With its compact size, long battery life, and minimalist functionality, the 902.105 is probably used in women’s delicate watches, men’s ultra-thin styles, and casual timepieces where low maintenance and sleek design are key. It may also serve as a replacement for older compact quartz movements in mid-range models.
Note: For exact specifications, refer to ETA’s official documentation or authoritative horological resources.
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