Timefactors
Speedbird PRS-51
- Same 36 mm case diameter
- Same Miyota 9015 caliber
What changes
$436 recorded MSRP, $111 higher
Watch alternatives
Alternatives to the Smiths BABY Speedbird PRS-51
Keep what you like. Explore what could be different. Compare 40 catalog matches by dimensions, movement and price.
- Case diameter
- 36 mm
- Lug-to-lug
- 42 mm
- Movement
- Automatic
- Catalog MSRP
- $325
The starting pointStarting points
Choose the differences that matter to you.
Closest catalog matchTimefactors Speedbird PRS-51Same 36 mm case diameterSee the match Lower recorded MSRPSeiko Seiko 5 Sports Field series$315 recorded MSRP, $10 lowerSee the match Shorter lug-to-lugOmega Seamaster Aqua Terra Shades Co Axial Master Chronometer40.5 mm lug-to-lug, 1.5 mm shorterSee the match
Calculated from catalog specifications and similarity signals. Prices are recorded MSRP in USD. Missing measurements stay unknown.
Your priorities
Narrow these matches without leaving the page.
40 matches
Microbrand picks· 12
Discover smaller makers with catalog similarities to this watch.
Smiths
BABY Dreadnought PRS-52
- 37.4 mm case, 1.4 mm wider
- 45 mm lug-to-lug, 3 mm longer
- Same Miyota 9015 caliber
What changes
Compare models 1.6 mm thicker case. $360 recorded MSRP, $35 higher
Smiths
BABY Willard PRS-68
- 40.6 mm case, 4.6 mm wider
- 43.5 mm lug-to-lug, 1.5 mm longer
- Both use automatic movements
What changes
Compare models 2.3 mm thicker case. $335 recorded MSRP, $10 higher
Smiths
Everest
- Same 36 mm case diameter
- 43.5 mm lug-to-lug, 1.5 mm longer
- Both use automatic movements
What changes
Compare models $365 recorded MSRP, $40 higher
Astor + Banks
Fortitude Pro
- 38.5 mm case, 2.5 mm wider
- 45.5 mm lug-to-lug, 3.5 mm longer
- Same Miyota 9015 caliber
What changes
Compare models 0.5 mm thicker case. $725 recorded MSRP, $400 higher
Phoibos
Storm Corsair
- 40 mm case, 4 mm wider
- 46 mm lug-to-lug, 4 mm longer
- Same Miyota 9015 caliber
What changes
$565 recorded MSRP, $240 higher
Henry Archer
Tidevand
- 40 mm case, 4 mm wider
- 47 mm lug-to-lug, 5 mm longer
- Same Miyota 9015 caliber
What changes
0.8 mm thinner case. $717 recorded MSRP, $392 higher
Signum
Cuda Steel 39mm
- 39 mm case, 3 mm wider
- 46 mm lug-to-lug, 4 mm longer
- Same Miyota 9015 caliber
What changes
0.4 mm thinner case. $499 recorded MSRP, $174 higher
Erebus Watches
Ascent
- Same 36 mm case diameter
- Same Miyota 9015 caliber
What changes
Compare models 0.4 mm thinner case. $499 recorded MSRP, $174 higher
Knot Watches
AT1-40SSVGN
- 40 mm case, 4 mm wider
- Same Miyota 9015 caliber
What changes
Compare models 0.4 mm thinner case. $628 recorded MSRP, $303 higher
Henry Archer
Vesterhav
- 40 mm case, 4 mm wider
- 47 mm lug-to-lug, 5 mm longer
- Same Miyota 9015 caliber
What changes
1 mm thinner case. $847 recorded MSRP, $522 higher
Knot Watches
AT1-40SSV
- 40 mm case, 4 mm wider
- Same Miyota 9015 caliber
What changes
0.4 mm thinner case. $869 recorded MSRP, $544 higher
Mainstream picks· 12
Established-brand matches. Compare the recorded dimensions, movement and price for each watch.
Seiko
Seiko 5 Sports Field series
- $315 recorded MSRP, $10 lower
- 36.4 mm case, 0.4 mm wider
- 44.4 mm lug-to-lug, 2.4 mm longer
What changes
Compare models 1.1 mm thicker case
Seiko
Prospex 1959 Alpinist Re-creation Limited Edition
- 36.6 mm case, 0.6 mm wider
- 43.8 mm lug-to-lug, 1.8 mm longer
- Both use automatic movements
What changes
0.3 mm thinner case
Seiko
Seiko 5 Sports SNXS series
- 37.4 mm case, 1.4 mm wider
- 44.7 mm lug-to-lug, 2.7 mm longer
- Both use automatic movements
What changes
Compare models 1.1 mm thicker case. $415 recorded MSRP, $90 higher
Glycine
Combat Field GL0584
- 40 mm case, 4 mm wider
- Both use automatic movements
What changes
$485 recorded MSRP, $160 higher
Glycine
Combat Field GL0583
- 40 mm case, 4 mm wider
- Both use automatic movements
What changes
$360 recorded MSRP, $35 higher
Glycine
Airpilot GL0509
- 41 mm case, 5 mm wider
- Both use automatic movements
What changes
$540 recorded MSRP, $215 higher
Citizen
Tsuyosa 37mm
- 37 mm case, 1 mm wider
- Both use automatic movements
What changes
Compare models $356 recorded MSRP, $31 higher
Stowa
Partitio Ice Blue
- 37 mm case, 1 mm wider
- 46.9 mm lug-to-lug, 4.9 mm longer
- Both use automatic movements
What changes
0.5 mm thinner case
Invicta
Jason Taylor 38050
- 38 mm case, 2 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Orient
Golden Eye II
- $315 recorded MSRP, $10 lower
- 38.5 mm case, 2.5 mm wider
- 45.5 mm lug-to-lug, 3.5 mm longer
What changes
0.4 mm thinner case
Orient
Diver Watch
- $310 recorded MSRP, $15 lower
- 41.5 mm case, 5.5 mm wider
- 47 mm lug-to-lug, 5 mm longer
What changes
1.6 mm thicker case
Bulova
Vintage Sea Hunter
- 39 mm case, 3 mm wider
- Both use automatic movements
What changes
$395 recorded MSRP, $70 higher
Cheaper alternatives· 4
Matches in a lower price band. A recorded MSRP difference is shown only when both prices are known.
Seiko
Conceptual SNK807K2
- $115 recorded MSRP, $210 lower
- 37 mm case, 1 mm wider
- Both use automatic movements
What changes
0.4 mm thinner case
Seiko
Conceptual SNXS79K1
- $133 recorded MSRP, $192 lower
- 37 mm case, 1 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Seiko
Seiko 5 SNKK27K1
- $133 recorded MSRP, $192 lower
- 37 mm case, 1 mm wider
- Both use automatic movements
What changes
Lug-to-lug is not recorded for this match.
Casio
Edifice EFK-100D
- 39 mm case, 3 mm wider
- 43.5 mm lug-to-lug, 1.5 mm longer
- Both use automatic movements
What changes
1.1 mm thicker case
Pricier alternatives· 12
Matches in a higher price band. Check the specifications to decide whether the differences matter to you.
Omega
Seamaster Aqua Terra Shades Co Axial Master Chronometer
- 34 mm case, 2 mm narrower
- 40.5 mm lug-to-lug, 1.5 mm shorter
- Both use automatic movements
What changes
Compare models 0.5 mm thicker case. $7,400 recorded MSRP, $7,075 higher
Longines
Spirit
- 37 mm case, 1 mm wider
- 44.8 mm lug-to-lug, 2.8 mm longer
- Both use automatic movements
What changes
Compare models 0.3 mm thicker case. $2,850 recorded MSRP, $2,525 higher
Bremont
Altitude 39 Date
- 39 mm case, 3 mm wider
- Both use automatic movements
What changes
0.2 mm thinner case. $3,950 recorded MSRP, $3,625 higher
NOMOS Glashütte
Club Sport neomatik petrol
- 37 mm case, 1 mm wider
- 47.7 mm lug-to-lug, 5.7 mm longer
- Both use automatic movements
What changes
3.1 mm thinner case. $3,750 recorded MSRP, $3,425 higher
Omega
Seamaster Railmaster Co Axial Master Chronometer 38mm
- 38 mm case, 2 mm wider
- 44.9 mm lug-to-lug, 2.9 mm longer
- Both use automatic movements
What changes
Compare models 1 mm thicker case. $6,200 recorded MSRP, $5,875 higher
Longines
Conquest
- 38 mm case, 2 mm wider
- 46.8 mm lug-to-lug, 4.8 mm longer
- Both use automatic movements
What changes
Compare models 0.5 mm thinner case. $2,400 recorded MSRP, $2,075 higher
Christopher Ward
C63 Sealander Automatic
- Same 36 mm case diameter
- Both use automatic movements
What changes
Compare models 0.5 mm thinner case. $1,375 recorded MSRP, $1,050 higher
Hamilton
Khaki Field Expedition Auto
- 37 mm case, 1 mm wider
- Both use automatic movements
What changes
$1,245 recorded MSRP, $920 higher
Hamilton
Khaki Aviation Pilot Auto
- Same 36 mm case diameter
- Both use automatic movements
What changes
0.3 mm thinner case. $1,125 recorded MSRP, $800 higher
IWC Schaffhausen
Pilot's Watch Mark XX
- 40 mm case, 4 mm wider
- Both use automatic movements
What changes
0.6 mm thinner case. $6,800 recorded MSRP, $6,475 higher
Norqain
Adventure Sport 37mm
- 37 mm case, 1 mm wider
- 44 mm lug-to-lug, 2 mm longer
- Both use automatic movements
What changes
$3,446 recorded MSRP, $3,121 higher
Norqain
Adventure Sport 37mm S-G Grey
- 37 mm case, 1 mm wider
- 44 mm lug-to-lug, 2 mm longer
- Both use automatic movements
What changes
Compare models $4,848 recorded MSRP, $4,523 higher
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