Timefactors Everest PRS-25vsTimefactors Speedbird PRS-51
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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.

Everest PRS-25

Speedbird PRS-51
Diameter
36mm
36mm
Lug-to-Lug
43.5mm
42mm
lowest
Thickness
11.4mm
11.4mm
Water Resistance
100m
100m
MSRP
$463
$436
lowest
Movement
Miyota 9039
Miyota 9015
Case
2 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Timefactors Everest PRS-25 for its gorgeous design, flawless finishing, and comfortable 36mm wearability, often calling it the best Rolex Explorer 1016 homage available. The Miyota 9039 movement is noted as an improvement, and the updated riveted bracelet is generally well-received. Accuracy figures vary, with some owners reporting excellent timekeeping around +1 second per day, while others note deviations of +8 to +10 seconds per day. Some owners find the bracelet heavy and difficult to fit perfectly, and a few have experienced issues with the clasp popping open or the crystal detaching, alongside reports of challenging purchasing experiences and negative customer service. Overall, owners rate the Timefactors Everest PRS-25 highly for its exceptional value and faithful homage design, making the difficult purchase experience ultimately worthwhile.
The Miyota 9039 movement demonstrated impressive accuracy. Reviewers noted the comfortable 36mm case size and vintage aesthetic. One reviewer experienced quality issues after a year of ownership.
Owners widely praise the Timefactors Speedbird PRS-51 for its value and classic pilot's watch aesthetic, noting its beautiful AR sapphire crystal and minimalistic dial. The 36mm case is described as wearing thinner than expected, though some find the 5-link bracelet stiff or heavy, while others praise its drape and articulation. Accuracy figures vary, with some reporting impeccable timekeeping and others noting deviations of +7 to +10 seconds per day from the Miyota 9015 movement. Overall, owners rate the Timefactors Speedbird PRS-51 highly for its attractive flieger design and excellent value at its price point.
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