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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
Unimatic Modello Tre UC3 Classic chronograph diver, front view on black NATO strap

Unimatic

Modello Tre UC3
Mid-range · $600–900
Brand
Baltic
Unimatic
Category
Dive
Dive
Diameter
39 mm
41.5 mm
Lug-to-lug
47 mm
51 mm
Thickness
13 mm
13.7 mm
Lug width
20 mm
22 mm
Water resistance
200 m
300 m
Crystal
double-dome sapphire with internal AR coating
sapphire
Type
Automatic
Meca-quartz
Caliber
Miyota 9039 →
Seiko VK64 →
Power reserve
42 h
—
Jewels
24
0
Lume
Super-LumiNova C1
Super-LumiNova C3
Strap / bracelet
rubber FKM strap or steel beads-of-rice bracelet
black NATO nylon strap
Released
2018
2021
Price guide
$600–900
$600–900

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.