Seiko Prospex Divers SRP777 vs Seiko Prospex Divers SRPB51

The Seiko Prospex Divers SRP777 and the Seiko Prospex Divers SRPB51 differ in 5 of the 18 specifications recorded for both: produced (2015 vs 2017), case width (45 mm vs 43.8 mm), case shape (Cushion vs Round), date display (Date, Day vs Date) and calibre (4R36 vs 4R35).

Where they differ

Specification Seiko SRP777Seiko SRPB51
Produced 2015 2017
Case width 45 mm 43.8 mm
Case shape Cushion Round
Date display Date, Day Date
Calibre 4R36 4R35

All specifications

Change the watches in Compare
Specification Seiko SRP777 Prospex Divers Seiko SRPB51 Prospex Divers
Identity
Brand Seiko Seiko
Reference SRP777 SRPB51
Collection Prospex Divers Prospex Divers
Produced 2015 2017
Limited edition No No
Gender Men's —
Style Diver —
Case
Case width 45.00 mm 43.80 mm
Case thickness 13.50 mm —
Lug width 22.00 mm 22.00 mm
Case material Stainless Steel Stainless Steel
Case shape Cushion Round
Case code 04Y0 —
Case back Closed Closed
Water resistance 200 m 200 m
Crystal & dial
Crystal material Hardlex Hardlex
Dial colour Black Black
Dial finish Matte Matte
Hour markings Stick / Dot Stick / Dot
Hands Arrow Arrow
Hour hand Silver —
Minute hand Silver —
Second hand Black, Silver —
Dial text "Automatic", "Diver's", Water Resistance —
Time display Hours, Minutes, Seconds Hours, Minutes, Seconds
Date display Date, Day Date
Movement
Movement type Automatic Automatic
Calibre 4R36 4R35
Jewels 24 —
Power reserve 41 hours —
Beat rate 21600 bph —
Manual winding Yes —
Hacking seconds Yes —
Crown & functions
Crown position 04:00 —
Moonphase No —
Date display Yes —
Day display Yes —
Screw-down crown Yes —
Replaceable band Yes —
Second crown No —
Bezel
Bezel material Stainless Steel —
Bezel colour Black, Silver —
Bezel function Rotating, 0-60 (Dive) Rotating, 0-60 (Dive)
Bezel markings Minute Numbering —
Inner bezel colour Black —
Inner bezel markings Bars —
Band
Band material Rubber —
Band colour Black —
Band width 22.00 mm —

Identity

Brand

Seiko
Seiko

Reference

SRP777
SRPB51

Collection

Prospex Divers
Prospex Divers

Produced

2015
2017

Limited edition

No
No

Gender

Men's
—

Style

Diver
—

Case

Case width

45.00 mm
43.80 mm

Case thickness

13.50 mm
—

Lug width

22.00 mm
22.00 mm

Case material

Stainless Steel
Stainless Steel

Case shape

Cushion
Round

Case code

04Y0
—

Case back

Closed
Closed

Water resistance

200 m
200 m

Crystal & dial

Crystal material

Hardlex
Hardlex

Dial colour

Black
Black

Dial finish

Matte
Matte

Hour markings

Stick / Dot
Stick / Dot

Hands

Arrow
Arrow

Hour hand

Silver
—

Minute hand

Silver
—

Second hand

Black, Silver
—

Dial text

"Automatic", "Diver's", Water Resistance
—

Time display

Hours, Minutes, Seconds
Hours, Minutes, Seconds

Date display

Date, Day
Date

Movement

Movement type

Automatic
Automatic

Calibre

4R36
4R35

Jewels

24
—

Power reserve

41 hours
—

Beat rate

21600 bph
—

Manual winding

Yes
—

Hacking seconds

Yes
—

Crown & functions

Crown position

04:00
—

Moonphase

No
—

Date display

Yes
—

Day display

Yes
—

Screw-down crown

Yes
—

Replaceable band

Yes
—

Second crown

No
—

Bezel

Bezel material

Stainless Steel
—

Bezel colour

Black, Silver
—

Bezel function

Rotating, 0-60 (Dive)
Rotating, 0-60 (Dive)

Bezel markings

Minute Numbering
—

Inner bezel colour

Black
—

Inner bezel markings

Bars
—

Band

Band material

Rubber
—

Band colour

Black
—

Band width

22.00 mm
—

Other comparisons