Baltic Aquascaphe MK2 vs Longines HydroConquest 39

Side-by-side comparison of specifications and features

BalticAquascaphe MK2

AQSC-MK2-39

LonginesHydroConquest 39

L3.740.4.56.6

Key Differences

Best Value

Baltic Aquascaphe MK2 (AQSC-MK2-39)

Starting from $743

Best Water Resistance

Longines HydroConquest 39 (Ref. L3.740.4.56.6)

300m (2x more)

Biggest Price Drop

Longines HydroConquest 39 (Ref. L3.740.4.56.6)

-24.6% in 30 days

Price Comparison

Baltic Aquascaphe MK2

MSRP

$743

Used

$697

Longines HydroConquest 39

MSRP

$2,000

New

$1,094

Used

$1,052

MSRP New (Amazon) Used (eBay)

Comparison of Baltic Aquascaphe MK2, Longines HydroConquest 39
Specification	Baltic Aquascaphe MK2	Longines HydroConquest 39
Pricing
MSRP	$743	$2,000
New Price	N/A	$1,094
Used Price (Low)	$697	$1,052
Used Price (High)	$799	$1,380
30-Day Trend	↓ -7.5%	↓ -24.6%
Used Price Range	$697 - $799	$1,052 - $1,380
Identity
Reference	AQSC-MK2-39	L3.740.4.56.6
Nickname	N/A	N/A
Style	Diver, Vintage	Diver, Sports
Release Era	2020s	2020s
Dimensions
Diameter	39.5mm	39mm
Thickness	12.9mm	N/A
Lug Width	20mm	N/A
Lug to Lug	47mm	N/A
Movement
Movement	Automatic	Automatic
Power Reserve / Battery	N/A	N/A
Accuracy	N/A	N/A
Case
Case Material	Stainless Steel	Stainless Steel
Crystal	Sapphire Crystal	Sapphire Crystal
Water Resistance	200m (diving)	300m (diving)
Bezel	Unidirectional rotating	Unidirectional rotating
Dial
Dial Color	Green	Black
Luminous	Yes	Yes
Community
Review Rating	N/A	N/A
In Collections	N/A	N/A
On Wishlists	N/A	N/A
Forum Threads	N/A	N/A

Quick Summary

Baltic Aquascaphe MK2 and Longines HydroConquest 39 can look close on a spec sheet, yet the tradeoffs that matter most are usually wrist presence versus easier fit, water-ready utility versus dressier everyday wear. They both touch the diver use case, so smaller spec differences can matter more than brand preference.

How to choose

The biggest practical difference is usually movement and upkeep. Start with wrist fit and movement preference, then use water resistance and price to break the tie.

Baltic Aquascaphe MK2

Baltic Aquascaphe MK2 is a better fit for mechanical-watch enthusiasts, diver styling.

Longines HydroConquest 39

Longines HydroConquest 39 is a better fit for mechanical-watch enthusiasts, diver styling.

Key Differences

Movement and upkeep

Baltic Aquascaphe MK2: automatic movement

Longines HydroConquest 39: automatic movement

Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.

Size and wearability

Baltic Aquascaphe MK2: 39.5mm · L2L 47mm

Longines HydroConquest 39: 39mm

Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.

Water resistance

Baltic Aquascaphe MK2: 200m

Longines HydroConquest 39: 300m

Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.

Price and value

Baltic Aquascaphe MK2: $743

Longines HydroConquest 39: $1,094

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Style and use case

Baltic Aquascaphe MK2: diver

Longines HydroConquest 39: diver

Both lean into a similar diver use case — the choice is more about fit, features, and price than category.

Crystal and materials

Baltic Aquascaphe MK2: sapphire crystal · steel

Longines HydroConquest 39: sapphire crystal · steel

Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.

Choose Baltic Aquascaphe MK2 If...

You want the lower current entry price.

Choose Longines HydroConquest 39 If...

Swimming, beach use, or tougher daily wear is part of the plan.
You are comfortable paying more for a stronger feature set.

Price and Value Notes

Baltic Aquascaphe MK2 is often the value play at current pricing, while Longines HydroConquest 39 makes more sense if you will use its extra features regularly.

There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.

Where to Check Deals

Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.

Check current deals on Amazon and eBay

Prices change often, so compare the latest listings and condition options before you buy.

WatchCompared may earn a commission from qualifying purchases through affiliate links. This does not change your price.

Baltic Aquascaphe MK2

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $739 · Live listings

Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.

Longines HydroConquest 39

Check Price on AmazonOpens in new tab · Price may vary

Check Price on eBayFrom $1084 · Live listings

Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.

Comparison FAQ

Which one is better for smaller wrists?

Start with case width and lug-to-lug. The watch that looks smaller on paper is often the safer choice, but lug shape and thickness still affect how it wears.

Which is better for swimming or rough daily wear?

Use the water resistance row as the first filter. Higher ratings generally give more flexibility for swimming and water exposure, but strap choice and overall condition still matter.

Should I choose based on price alone?

Price matters, but the better buy is the watch that matches your fit, feature priorities, and use case. Check live listings first, then decide whether the price gap actually changes the ownership experience.