Which is cheaper, the Lum-Tec B66 Day Date or the Seiko King Turtle?

At MSRP the Lum-Tec B66 Day Date is the cheaper of the two at $545, against $650 for the Seiko King Turtle — a $105 gap before any retailer discounting.

Which is bigger, the Lum-Tec B66 Day Date or the Seiko King Turtle?

The Seiko King Turtle wears larger at 45mm versus 44mm for the Lum-Tec B66 Day Date — a 1mm difference across the dial.

Which has better water resistance, the Lum-Tec B66 Day Date or the Seiko King Turtle?

The Seiko King Turtle is rated to 200m versus 100m for the Lum-Tec B66 Day Date.

Side by side

Lum-Tec B66 Day DatevsSeiko King Turtle

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

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Lum-Tec B66 Day Date

MSRP $545

See the full B66 Day Date

Seiko King Turtle

MSRP $650

See the full King Turtle

At a glance

14 of 29 specs differ

Diameter

B66 Day Date44mm

King Turtle45mm

Power Reserve

B66 Day Date—

King Turtle41h

Water Resistance

B66 Day Date100m

King Turtle200m

MSRP

B66 Day Date$545

King Turtle$650

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal

Domed Sapphire

Sapphire

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

Standard

—

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

—

Seiko 4R36

Power Reserve

41h

Jewels

Pricing

1 specs

MSRP

$545

$650

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Lum-Tec B66 Day DatevsSeiko King Turtle

At a glance

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