Side by side

Dryden Heartlander AutomaticvsTimefactors Speedbird PRS-51

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

Heartlander Automatic
DrydenHeartlander Automatic
MSRP $600
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.

Dryden Heartlander Automatic

The Dryden Heartlander Automatic is widely praised for its versatility, comfortable 38mm case that wears smaller than its dimensions suggest, and excellent dial variety. Reviewers highlight its value at $500, noting good finishing, a domed sapphire crystal, and 100m water resistance. The tapering bracelet with solid links is also considered comfortable. One owner notes the crown may protrude slightly and irritate some wearers. On balance, owners and reviewers rate the Dryden Heartlander Automatic highly for its combination of wearability, features, and value.

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

12 of 29 specs differ
Diameter
Heartlander Automatic38mm
Speedbird PRS-5136mm
Power Reserve
Heartlander Automatic40h
Speedbird PRS-51
Water Resistance
Heartlander Automatic101m
Speedbird PRS-51100m
MSRP
Heartlander Automatic$600
Speedbird PRS-51$436

Full specifications

Case

6 specs
Category
Field
Diameter
38mm
36mm
Thickness
11.2mm
11.4mm
Lug-to-Lug
46mm
42mm
Lug Width
20mm
18mm
Water Resistance
101m
100m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Goldfinch
Black
Lume
None
SuperLuminova X1-C3

Movement

2 specs
Caliber
Miyota 9039
Miyota 9015
Power Reserve
40h

Pricing

1 specs
MSRP
$600
$436
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