Astor + Banks Sea Ranger M2vsBorealis Watch Co. Estoril 300 GMT
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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.

Sea Ranger M2

Estoril 300 GMT
Diameter
40mm
41.5mm
Lug-to-Lug
45.5mm
lowest
47mm
Thickness
12.5mm
lowest
13.5mm
Water Resistance
300m
300m
MSRP
$1,299
$600
lowest
Movement
La Joux-Perret G100
Miyota 9075
Case
4 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Astor + Banks Sea Ranger M2 is noted for its functional and balanced design, excellent legibility, and a 12-hour lumed sapphire bezel. Reviewers highlight its good lume, though one source describes it as good but not great. The watch features a 40mm case and 300m water resistance. One review states it uses a La Joux-Perret G100 movement regulated to ±8 seconds per day, while another mentions a Sellita SW200 automatic movement adjusted by the brand. The pre-order price is $650, with a standard price of $850. On balance, reviewers find the Astor + Banks Sea Ranger M2 to be a compelling GADA watch, with its design and legibility being key strengths.
Owners widely praise the Borealis Watch Co. Estoril 300 GMT for its excellent value and robust build quality, featuring crisp dial details and exceptionally bright BGW9 lume. Some owners note the bezel insert's sapphire construction as an aesthetic departure from its inspiration, and one owner wishes for a white-painted second hand. The Borealis Watch Co. Estoril 300 GMT is described as dive-ready with a ceramic bezel and homage design. Overall, owners rate the Borealis Watch Co. Estoril 300 GMT highly for its impressive build quality and value at the price point.
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