Side by side

Zelos Hammerhead (Tantalum LE)vsLongines ULTRA‑CHRON CARBON

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

Hammerhead (Tantalum LE)
ZelosHammerhead (Tantalum LE)
MSRP $1,499
ULTRA‑CHRON CARBON
LonginesULTRA‑CHRON CARBON
MSRP $5,550

At a glance

19 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
ULTRA‑CHRON CARBON43mm
Power Reserve
Hammerhead (Tantalum LE)40h
ULTRA‑CHRON CARBON52h
Water Resistance
Hammerhead (Tantalum LE)300m
ULTRA‑CHRON CARBON300m
MSRP
Hammerhead (Tantalum LE)$1,499
ULTRA‑CHRON CARBON$5,550

Full specifications

Case

5 specs
Diameter
44mm
43mm
Thickness
13mm
14mm
Lug-to-Lug
44mm
48.9mm
Finish
Brushed and polished
Caseback
Solid
Screw-down case back

Crystal & Dial

6 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Tantalum LE
Silver
Indices
Applied
Applied indexes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Seiko NH35
L836.6
Beat Rate
28,800 vph
36,000 vph
Power Reserve
40h
52h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds

Pricing

1 specs
MSRP
$1,499
$5,550

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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.

Zelos Hammerhead (Tantalum LE)

The Zelos Hammerhead (Tantalum LE) features a forged carbon dial and bezel insert with infused lume. On balance, owners and reviewers rate the Zelos Hammerhead (Tantalum LE) highly for its unique material composition and substantial feel.

Longines ULTRA‑CHRON CARBON

The Longines ULTRA‑CHRON CARBON is praised for its lightweight composite case and unique "Batman" aesthetic, with its 5Hz movement widely noted for exceptional accuracy. Owners widely report the high-beat movement is the cheapest 5Hz option available. Some owners find the non-rotating bezel a relief, while others consider it a deal-breaker, noting the watch is no longer a dive watch. On balance, owners and reviewers highly rate the Longines ULTRA‑CHRON CARBON for its cool, lightweight design and the exceptional accuracy of its 5Hz movement.

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