Side by side

Maen Skymaster 38 MKIIIvsLongines ULTRA‑CHRON CARBON

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

Skymaster 38 MKIII
MaenSkymaster 38 MKIII
MSRP $1,679
ULTRA‑CHRON CARBON
LonginesULTRA‑CHRON CARBON
MSRP $5,550

At a glance

23 of 29 specs differ
Diameter
Skymaster 38 MKIII38mm
ULTRA‑CHRON CARBON43mm
Power Reserve
Skymaster 38 MKIII40h
ULTRA‑CHRON CARBON52h
Water Resistance
Skymaster 38 MKIII100m
ULTRA‑CHRON CARBON300m
MSRP
Skymaster 38 MKIII$1,679
ULTRA‑CHRON CARBON$5,550

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
38mm
43mm
Thickness
13.4mm
14mm
Lug-to-Lug
48.9mm
Lug Width
22mm
Material
316L Stainless Steel
Titanium
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid
Screw-down case back

Crystal & Dial

6 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
M6.1.1
Silver
Indices
Applied
Applied indexes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Sellita SW510mb
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
$1,679
$5,550

Follow this matchup

Get a note when Maen Skymaster 38 MKIII vs Longines ULTRA‑CHRON CARBON gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Maen Skymaster 38 MKIII

The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which offers a premium feel with a sharp, legible dial and well-executed applied markers. Reviewers note the sweet winding action and the vintage-inspired brown sunburst dial with dauphine hands and lollipop register pointers. The watch is powered by a manual-wind Sellita SW510Mb movement with a 63-hour power reserve. Accuracy figures vary, with one reviewer reporting +7 seconds per day and another stating a tolerance of +/-15 seconds per day. On balance, owners and reviewers appreciate the Maen Skymaster 38 MKIII for its refined vintage-inspired design and compact dimensions at its price point.

From video reviewers

The 38mm case size is a key strength for the Maen Skymaster 38 MKIII. Reviewers noted the excellent quality-price ratio for a Swiss-made chronograph.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.