Slow Watches O 01vsTissot PRC 100 Solar
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

O 01

PRC 100 Solar
Diameter
42.5mm
39mm
Thickness
9.8mm
9.2mm
lowest
Water Resistance
100m
100m
MSRP
n/a
$575
Movement
Ronda 505.24
11.5'
Case
4 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Slow Watches O 01 for its gorgeous 24-hour dial, unique one-hand design, and conversational appeal, with many finding it a joy for daily wear and an interesting, affordable alternative. The watch's Swiss-made quality and stainless steel construction are noted, and some owners report the Italian leather band aged well. However, the watch is not ideal for precise timekeeping, with time only readable in roughly 15-minute increments, and some find the midnight at 6 o'clock position unconventional. Owners are split on the typeface, with one disliking the "0" numeral, and some consider the $300 price point high for its perceived gimmick status and reduced mechanics. Setting the watch requires a specific clockwise-only crown rotation, and battery changes may require a small flathead screwdriver. Overall, owners rate the Slow Watches O 01 highly for its unique design and conversational appeal, despite its limitations for precise time-telling.
Owners widely praise the Tissot PRC 100 Solar for its solar quartz movement, offering convenience and a 14-month power reserve, and its versatile, clean aesthetic housed in a 39mm case with good finishing for the price. Some find the dial colors a bit boring and dislike the date window placement, while others note the second-hand ticking as a drawback compared to automatic movements. The watch features a distinctive dodecagonal bezel and a novel light-gathering sapphire crystal. On balance, owners and reviewers rate the Tissot PRC 100 Solar highly for its innovative solar movement and value proposition in the quartz GADA watch market.
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