Side by side

Bremont Altitude Perpetual Calendar GMTvsIslander Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450
Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18
IslanderIslander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18
MSRP $429

At a glance

17 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-1843mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18
Water Resistance
Altitude Perpetual Calendar GMT
Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18200m
MSRP
Altitude Perpetual Calendar GMT$38,450
Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18$429

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
42mm
43mm
Thickness
12.65mm
14mm
Lug-to-Lug
46mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
Caseback
Solid
Engraved screw-in back

Crystal & Dial

4 specs
Crystal Shape
Flat
Double Domed
AR Coating
Inner
Yes
Dial Color
Blue
Indices
Applied

Movement

4 specs
Caliber
Seiko NH36
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
0h
Jewels
25
0

Pricing

1 specs
MSRP
$38,450
$429

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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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18

Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18 owners praise its $300 value, noting the double-domed AR sapphire crystal and embossed ceramic bezel. The 43mm size is appreciated, and the NH36 movement offers hand-winding and hacking. On balance, owners rate the Islander Automatic Dive Watch with Bracelet, Double-Domed AR Sapphire Crystal, and Embossed Ceramic Bezel Insert #ISL-18 highly for its substantial feel and feature set at the price point.

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