Side by side

Islander Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291vsFormex Reef GMT

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

Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291
IslanderIslander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291
MSRP $499
Reef GMT
FormexReef GMT
MSRP $2,235

At a glance

17 of 29 specs differ
Diameter
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-29137mm
Reef GMT42mm
Power Reserve
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291
Reef GMT56h
Water Resistance
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291200m
Reef GMT300m
MSRP
Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291$499
Reef GMT$2,235

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
37mm
42mm
Thickness
11.7mm
11.4mm
Lug-to-Lug
0mm
47mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Water Resistance
200m
300m
Caseback
Screw-down
Solid

Crystal & Dial

4 specs
AR Coating
Underside
Inner
Dial Color
Black
Indices
Applied
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Miyota 90S5
Sellita SW330-2
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
56h
Jewels
0
25

Pricing

1 specs
MSRP
$499
$2,235

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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.

Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291

The Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291 is widely praised for its looks, build quality, and impressive specifications, including a high-beat Miyota 9015 movement with hacking and hand-winding, sapphire crystal, and 200m water resistance. Owners consider it excellent value, citing the finishing and comfortable fit. One owner notes the bright lume is fleeting. The watch is powered by a Miyota 9015 movement with a 40-hour power reserve. Overall, owners and reviewers rate the Islander Northport 37mm Automatic Watch with Purple Ripple Dial #ISL-291 highly for its exceptional value and robust specifications at its price point.

Formex Reef GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

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