Side by side

Orient Bambino Open HeartvsZelos Hammerhead V3 300m Titanium

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

Bambino Open Heart
OrientBambino Open Heart
MSRP $315
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

17 of 29 specs differ
Diameter
Bambino Open Heart40.5mm
Hammerhead V3 300m Titanium44mm
Power Reserve
Bambino Open Heart40h
Hammerhead V3 300m Titanium40h
Water Resistance
Bambino Open Heart30m
Hammerhead V3 300m Titanium300m
MSRP
Bambino Open Heart$315
Hammerhead V3 300m Titanium$559

Full specifications

Case

8 specs
Category
Diver
Diameter
40.5mm
44mm
Thickness
12mm
13mm
Lug-to-Lug
46mm
44mm
Lug Width
21mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
30m
300m
Caseback
Display
Solid

Crystal & Dial

5 specs
Crystal
Mineral
Domed Sapphire
Crystal Shape
Flat
AR Coating
Inner
Dial Color
White
Ti - Mosaic MOP
Indices
Applied

Movement

3 specs
Caliber
FT622
Seiko NH35
Beat Rate
21,600 vph
28,800 vph
Jewels
22
25

Pricing

1 specs
MSRP
$315
$559

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Orient Bambino Open Heart

Owners widely praise the Orient Bambino Open Heart for its dressy style, clean dial, and reliable in-house F6724 automatic movement with hacking and hand-winding. Reviewers and owners highlight its value proposition, with one owner noting it remains a regular wear even after acquiring pricier watches. Some owners find the build quality and stock strap less premium, with one noting the mineral crystal is prone to scratching and another that the movement can be noisy. The 21mm lug width is cited as making strap swapping slightly more complicated. Overall, owners and reviewers rate the Orient Bambino Open Heart highly for its dressy aesthetic and in-house movement at its price point.

Zelos Hammerhead V3 300m Titanium

The Zelos Hammerhead V3 300m Titanium is widely praised for its exceptional lume, unique and beautiful dial finishing that reflects light dramatically, and solid build quality that exceeds its price point. Owners also highlight its comfortable wearability, especially the lightweight titanium variant, and the convenient on-the-fly micro-adjustment on the bracelet. One owner notes the Japanese movement performs better than anticipated, and the Ti-Damascus variant features a unique, patterned dial and bezel. However, some owners find the 44mm size large, the crown "off," and the bracelet clasp could be more scratch-resistant, with resizing pins described as stubborn. Reattaching the bracelet after removal is also noted as extremely difficult. Overall, owners rate the Zelos Hammerhead V3 300m Titanium highly for its impressive dial aesthetics and value for money.

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