Side by side

Formex Reef 39.5 mmvsTissot Le Locle Open Heart

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

Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
Le Locle Open Heart
TissotLe Locle Open Heart
MSRP $995

At a glance

12 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Le Locle Open Heart39.3mm
Power Reserve
Reef 39.5 mm56h
Le Locle Open Heart80h
Water Resistance
Reef 39.5 mm300m
Le Locle Open Heart30m
MSRP
Reef 39.5 mm$2,230
Le Locle Open Heart$995

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
39.5mm
39.3mm
Thickness
11mm
9.75mm
Lug-to-Lug
45.5mm
39.3mm
Lug Width
22mm
19mm
Water Resistance
300m
30m

Crystal & Dial

3 specs
Dial Color
Bahama Blue
Silver
Indices
Applied
Roman
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
11 1/2'''
Power Reserve
56h
80h

Pricing

1 specs
MSRP
$2,230
$995

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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.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

Tissot Le Locle Open Heart

Owners widely praise the Tissot Le Locle Open Heart for its elegant aesthetic, featuring a guilloché dial and Roman numerals, and appreciate its practical 80-hour power reserve and Nivachron hairspring. The watch is also noted for offering dual bracelet and strap options, along with a see-through case back. However, one owner flags negative community feedback regarding the comfort of the synthetic leather strap. Overall, owners rate the Tissot Le Locle Open Heart highly for its attractive design and impressive technical specifications at its price point.

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