Rolex Day-Date

Debuted in 1956 as the first wristwatch to spell out the day of the week on the dial.

6 references

“Differs” marks a spec with different recorded values. — means not recorded.

6 references side by side. 7 of 15 specs differ.
Spec	1803	18038	18238	118238	228235	228238
Case size Differs	36 mm	36 mm	36 mm	36 mm	40 mm	40 mm
Thickness	12.5 mm	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
Case Differs	18k yellow gold	18k yellow gold	18k yellow gold	18k yellow gold	18k Everose gold	18k yellow gold
Bezel	fluted	fluted	fluted	fluted	fluted	fluted
Crystal Differs	acrylic	sapphire	sapphire	sapphire	sapphire	sapphire
Water resistance	Not recorded	Not recorded	100 m	100 m	100 m	100 m
Caliber Differs	1556	3055	3155	3155	3255	3255
Movement maker	Rolex	Rolex	Rolex	Rolex	Rolex	Rolex
Movement type	Automatic	Automatic	Automatic	Automatic	Automatic	Automatic
Jewels Differs	26	31	31	31	31	31
Frequency	Not recorded	28800 vph	28800 vph	28800 vph	28800 vph	28800 vph
Power reserve Differs	Not recorded	Not recorded	48 h	48 h	70 h	70 h
Complications	day, date	day, date	day, date	day, date	day, date	day, date
Bracelet	President	President	President	President	President	President
Produced Differs	1960–1977	1977–1988	1988–2000	2000–2015	2015	2015