Side by side

Longines HYDROCONQUEST GMTvsYema Superman Steel CMM.10

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

HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350
Superman Steel CMM.10
YemaSuperman Steel CMM.10
MSRP $1,890

At a glance

9 of 29 specs differ
Diameter
HYDROCONQUEST GMT41mm
Superman Steel CMM.1039mm
Power Reserve
HYDROCONQUEST GMT40h
Superman Steel CMM.1040h
Water Resistance
HYDROCONQUEST GMT300m
Superman Steel CMM.10300m
MSRP
HYDROCONQUEST GMT$3,350
Superman Steel CMM.10$1,890

Full specifications

Case

5 specs
Diameter
41mm
39mm
Thickness
12.9mm
11.3mm
Lug-to-Lug
49.4mm
Lug Width
21mm
19mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Green
Steel

Movement

1 specs
Caliber
L844.5
Yema CMM.10

Pricing

1 specs
MSRP
$3,350
$1,890

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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.

Longines HYDROCONQUEST GMT

Owners widely praise the Longines HYDROCONQUEST GMT for its excellent finishing, smooth winding action, and overall value, with some finding its build quality and colorways superior to higher-priced competitors. Reviewers and owners alike note its robustness as a traveler's dive watch with a true GMT movement. Some owners find the round markers at 6 and 9 disrupt dial symmetry, and the GMT hour markers are described as tiny and difficult to read. The date wheel can be mismatched on certain dial colors, and the bracelet clasp is noted as sharp by one reviewer. While some owners wish for a smaller case size, others find the 41mm comfortable. The bezel action is flagged as having bounce-back by one owner, though the brushed finish effectively hides wear. Overall, owners and reviewers rate the Longines HYDROCONQUEST GMT highly for its robust build and excellent value proposition.

Yema Superman Steel CMM.10

Owners widely praise the Yema Superman Steel CMM.10 for its refined casework, including polished lug bevels and an elegant crown guard, and its comfortable 39mm x 10.5mm dimensions. The glossy black lacquer dial and bezel insert are noted for adding depth, and the in-house CMM.10 movement is reported to be accurate, with one owner observing a loss of only 2 seconds over 2 days. The scales bracelet is described as gorgeous and nearly invisible on the wrist, though some find its polished center links too flashy. One reviewer flagged the signature bezel lock mechanism as flimsy and inconvenient. The CMM.10 automatic movement offers a 70-hour power reserve and is regulated to within +5/-3 seconds per day. On balance, owners and reviewers rate the Yema Superman Steel CMM.10 highly for its refined finishing and comfortable wearability at its price point.

From video reviewers

The Yema Steel features an in-house movement with a micro-rotor, one of the most beautiful at this price point. The watch's clasp feels a bit thin, which is a notable drawback. Reviewers disagree on the movement's power reserve, with one reviewer noting a 42-hour reserve and the other not mentioning power reserve at all.

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