Side by side

Lorier Hydra SIIIvsTimefactors Speedbird PRS-51

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Hydra SIII
LorierHydra SIII
MSRP $699
Speedbird PRS-51
TimefactorsSpeedbird PRS-51
MSRP $436
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Lorier Hydra SIII

Owners and reviewers praise the Lorier Hydra SIII for its value, GMT functionality via the Miyota 9075 movement, and classic travel-diver aesthetics. Some reviewers note the finishing is simple or a tad rough around the edges, while others find it good for the price. Accuracy figures range from +7 to +8.5 seconds per day. The domed Hesalite crystal may exhibit distortion. Overall, owners and reviewers rate the Lorier Hydra SIII highly for its feature set and value proposition in a travel-diver format.

Timefactors Speedbird PRS-51

Owners widely praise the Timefactors Speedbird PRS-51 for its flieger design, AR sapphire crystal, and value at £200. The 36mm case is noted to wear closer to 37mm due to the dial size, and while one owner describes the 5-link bracelet as well-built but stiff, another praises its drape and articulation. Accuracy figures vary among owners, with one reporting +7 seconds per day and another around +10 seconds per day, though one owner states theirs keeps impeccable time. The Miyota 9015 movement is noted by one owner to exhibit noticeable rotor wobble. Overall, owners rate the Timefactors Speedbird PRS-51 highly for its pilot watch aesthetics and value.

At a glance

11 of 29 specs differ
Diameter
Hydra SIII39mm
Speedbird PRS-5136mm
Power Reserve
Hydra SIII40h
Speedbird PRS-51
Water Resistance
Hydra SIII200m
Speedbird PRS-51100m
MSRP
Hydra SIII$699
Speedbird PRS-51$436

Full specifications

Case

6 specs
Category
Diver
Diameter
39mm
36mm
Thickness
11.4mm
Lug-to-Lug
42mm
Lug Width
20mm
18mm
Water Resistance
200m
100m

Crystal & Dial

2 specs
Dial Color
Blue
Black
Lume
None
SuperLuminova X1-C3

Movement

2 specs
Caliber
Miyota 9015
Power Reserve
40h

Pricing

1 specs
MSRP
$699
$436
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