Which is cheaper, the Sinn 556 I WT or the Boldr Polaris?

At MSRP the Boldr Polaris is the cheaper of the two at $399, against $2,106 for the Sinn 556 I WT — a $1,707 gap before any retailer discounting.

Which is bigger, the Sinn 556 I WT or the Boldr Polaris?

The Sinn 556 I WT wears larger at 38.5mm versus 38mm for the Boldr Polaris — a 0.5mm difference across the dial.

What movement does the Sinn 556 I WT run compared to the Boldr Polaris?

Both watches run automatic movements — the Sinn 556 I WT uses the Sellita SW200-1 and the Boldr Polaris uses the Seiko NH38.

Side by side

Sinn 556 I WTvsBoldr Polaris

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

Add a watch

Sinn 556 I WT

556 I WT

MSRP $2,106

See the full 556 I WT

MSRP $399

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

Buy from Boldr ↗

Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

16 of 29 specs differ

Diameter

556 I WT38.5mm

Polaris38mm

Power Reserve

556 I WT38h

Polaris—

Water Resistance

556 I WT200m

Polaris200m

MSRP

556 I WT$2,106

Polaris$399

Full specifications

Case

6 specs

Diameter

38.5mm

38mm

Thickness

11mm

12mm

Lug-to-Lug

—

44mm

Material

Stainless Steel

Titanium

Finish

satinized

—

Caseback

—

Crystal & Dial

5 specs

Crystal Shape

—

AR Coating

Underside

Yes

Dial Color

Red

Blackout

Indices

Applied

—

Lume

Luminescent

Super-LumiNova

Movement

4 specs

Caliber

Sellita SW200-1

Seiko NH38

Beat Rate

28,800 vph

0 vph

Power Reserve

38h

Jewels

Pricing

1 specs

MSRP

$2,106

$399

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Damaskomicro

Follow this matchup

Get a note when Sinn 556 I WT vs Boldr Polaris gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Marin Instruments Standard Skin-Diver OSvsBoldr Polaris Boldr PolarisvsWren Diver One Aqua DuFrane Watches Travis 39mm MkII Mechanical Diving WatchvsBoldr Polaris Beaucroft Watches ElementvsBoldr Polaris Sinn 556 I WTvsBoldr Venture Sinn 556 I WTvsBOLDR Supply Co. Venture Carbon Black

Edit this comparison Add another watch More tool comparisons Best Tool Watches Under $2,000 Explore more 37–40mm watches

Sinn 556 I WTvsBoldr Polaris

At a glance

Full specifications

More watches worth a look

DK30 Ocean

Sector II Field Titanium

DK20

Venture Ivory White

Steel Navigator SSNAV Auto

Venture Earth

Jeep Rubicon GSAR

Neptuno

Follow this matchup

People also compared