Casio B640W 35mm

Reference: B640WGG-9 | Yellow gold dial on a stainless steel bracelet

5
1 ratings 1 reviews
Case diam.
35 mm
Lug to lug
38.9 mm
Height
9.9 mm
Est. min. wrist size
5.3 in / 13.5 cm
My rating:

Specifications

Base

Brand
Watch style

Build

Case shape
Square
Case diameter
35 mm
Case height
9.9 mm
Lug to lug
38.9 mm
Weight
49 g
Water resistance
50 m
Case materials
Resin
Bracelet materials
Stainless steel

Visuals

Dial color
Case color
Yellow gold
Band color
Yellow gold

Movement

Caliber
Type
Quartz
Power reserve
26298 hours

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Wrist size and fit

Based on estimates this watch fits best on wrists sized between 5.3in - 6.6in (13.5cm - 16.8cm) .

5 12.7
5.5 13.9
6 15.2
6.5 16.5
7 17.7
7.5 19
8 20.3
8.5 21.5
9 22.8
IN
Too small
Good fit
Too big
CM
Estimated based on specs
Real usage data
My size finder

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Reviews

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Sergio L wrist 6.30"/16.00cm
★★★★★
★★★★★
May 8, 2025

I would rate it like the perfect office watch. GADA design and high comfort. The backlight is much better than many other vintage Casios, maybe excepto for the A168 wich is amazing. 

Suits very well on medium to small wrists, it is very easy to dress, very minimalistic look and is a strap monster as well. Highly recommendable, you get a lot for what you pay. 

Where not available in the original review, star ratings on external reviews are editorially given by Chronotick based on the sentiment of the review.