Side by side

Tudor Black Bay Chrono S&GvsYema Navygraf CMM.10

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

Black Bay Chrono S&G
TudorBlack Bay Chrono S&G
MSRP $8,525
Navygraf CMM.10
YemaNavygraf CMM.10
MSRP $1,899

At a glance

21 of 29 specs differ
Diameter
Black Bay Chrono S&G41mm
Navygraf CMM.1039mm
Power Reserve
Black Bay Chrono S&G70h
Navygraf CMM.1040h
Water Resistance
Black Bay Chrono S&G200m
Navygraf CMM.10100m
MSRP
Black Bay Chrono S&G$8,525
Navygraf CMM.10$1,899

Full specifications

Case

8 specs
Category
Chronograph
Diver
Diameter
41mm
39mm
Thickness
14.4mm
11mm
Lug Width
22mm
19mm
Material
Stainless Steel
316L Stainless Steel
Finish
Polished + Satin
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Standard
Indices
Applied

Movement

7 specs
Caliber
MT5813
Yema CMM.10
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes
Complications
Chronograph
None

Pricing

1 specs
MSRP
$8,525
$1,899

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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.

Tudor Black Bay Chrono S&G

The Tudor Black Bay Chrono S&G is widely praised for its bold, vintage-inspired two-tone design, solid modern build, and attractive price point. Owners and reviewers highlight its well-made bracelet, T-fit clasp, and compelling styling, with some noting its unique, muted gold tone that is less flashy than other gold watches. One owner reported excellent timing accuracy of +/- 1 second per day. The Tudor Black Bay Chrono S&G utilizes the MT5813 movement, a modified Breitling B01, offering a 70-hour power reserve. However, some find the 45-minute chronograph register less practical than a 60-minute counter, and the use of gold capping on the bracelet and bezel is a point of contention for some, with one user also noting faux bracelet rivets as a detractor. The watch's thickness and lug structure are also cited as potential drawbacks for wearability on smaller wrists.

Yema Navygraf CMM.10

Owners widely report quality control concerns and suspect craftsmanship with the Yema Navygraf, with one user noting crooked text. A reviewer praised the Slim CMM.20 Limited Edition for its stylish, slim profile and classy finishing on a black lacquered enamel dial, though the audible micro-rotor spinning at its price point was a surprise. On balance, the consensus is that while the Yema Navygraf offers a stylish design, potential buyers should be aware of reported quality control issues.

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