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Pick any two models to see their specs side by side. Rows that differ are highlighted.

Baltic Aquascaphe MK2 with blue dial and sapphire dive bezel, front view

Baltic

Aquascaphe
Mid-range · $600–900
Formex Essence ThirtyNine black dial on steel bracelet, front view

Formex

Essence ThirtyNine
Premium · $1,300+
Brand
Baltic
Formex
Category
Dive
Sports
Diameter
39 mm
39 mm
Lug-to-lug
47 mm
45 mm
Thickness
13 mm
10 mm
Lug width
20 mm
20 mm
Water resistance
200 m
100 m
Crystal
double-dome sapphire with internal AR coating
sapphire
Type
Automatic
Automatic
Caliber
Miyota 9039 →
Sellita SW200-1 →
Power reserve
42 h
38 h
Jewels
24
26
Lume
Super-LumiNova C1
BGW9 Super-LumiNova
Strap / bracelet
rubber FKM strap or steel beads-of-rice bracelet
stainless steel bracelet or leather strap (quick-release)
Released
2018
2020
Price guide
$600–900
$1,300+

Highlighted rows differ. For dimensions and reserve, the larger figure is shown in accent — larger isn't always better; choose by what fits your wrist and use.

Sources

Specifications compiled from official brand product pages and verified against independent retailer listings. Dimensions are manufacturer-stated. Prices are shown as broad bands, not exact figures. Last reviewed June 2026.