Which is cheaper, the Gruppo Gamma Vanguard Steel Date or the Orient Bambino Open Heart?

At MSRP the Orient Bambino Open Heart is the cheaper of the two at $315, against $790 for the Gruppo Gamma Vanguard Steel Date — a $475 gap before any retailer discounting.

Which is bigger, the Gruppo Gamma Vanguard Steel Date or the Orient Bambino Open Heart?

The Gruppo Gamma Vanguard Steel Date wears larger at 42mm versus 40.5mm for the Orient Bambino Open Heart — a 1.5mm difference across the dial.

Which has better water resistance, the Gruppo Gamma Vanguard Steel Date or the Orient Bambino Open Heart?

The Gruppo Gamma Vanguard Steel Date is rated to 100m versus 30m for the Orient Bambino Open Heart.

Which has a longer power reserve, the Gruppo Gamma Vanguard Steel Date or the Orient Bambino Open Heart?

The Gruppo Gamma Vanguard Steel Date carries a 42-hour power reserve against 40 hours on the Orient Bambino Open Heart.

What movement does the Gruppo Gamma Vanguard Steel Date run compared to the Orient Bambino Open Heart?

Both watches run automatic movements — the Gruppo Gamma Vanguard Steel Date uses the Miyota 9015 and the Orient Bambino Open Heart uses the FT622.

Side by side

Gruppo Gamma Vanguard Steel DatevsOrient Bambino Open Heart

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

Gruppo Gamma Vanguard Steel Date

ag-11

MSRP $790

Orient Bambino Open Heart

ra-ag0001s30b

MSRP $315

At a glance

19 of 29 specs differ

Diameter

Vanguard Steel Date42mm

Bambino Open Heart40.5mm

Power Reserve

Vanguard Steel Date42h

Bambino Open Heart40h

Water Resistance

Vanguard Steel Date100m

Bambino Open Heart30m

MSRP

Vanguard Steel Date$790

Bambino Open Heart$315

Full specifications

Case

7 specs

Crystal & Dial

6 specs

Crystal

Sapphire

Mineral

Crystal Shape

Flat

—

AR Coating

Yes

—

Dial Color

Forged Carbon

White

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

Miyota 9015

FT622

Beat Rate

28,800 vph

21,600 vph

Power Reserve

42h

40h

Jewels

Complications

Date

None

Pricing

1 specs

MSRP

$790

$315

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