OUR BEST MODEL TO DATE

SHELLBACK

We are a small brand that produce limited quantities. Sign up below to get your hands on one when they are released.

ETA Q1 2022

SHELLBACK

Shellback was released as a pre-order in mid-August 2021 and sold out quickly. A small additional batch will be released when the pre-order watches are ready for shipment – ETA Q1 2022.

To get your hands on one of these watches sign up below and act quick when you have your chance.


INTEREST LIST
Sign up to stay in the loop and get notified as soon as Shellback is available.

Don't just LISTEN TO US

MEDIA & REVIEWS

JUST ONE MORE WATCH

"high quality attainable for the mere mortal"

PETER KOTSA

"BEST MICROBRAND ALL YEAR!"

Watch chris

"BEST NEW MICROBRAND DIVER?"

A BLOG TO WATCH

"A lot of value and some very thoughtful design"

BACK IN TIME

"A HOMERUN FROM SWEDEN"

BRUCE WILLIAMS

"not an homage, it's AN original design!"

JUST ONE MORE WATCH

"high quality attainable for the mere mortal"

PETER KOTSA

"BEST MICROBRAND ALL YEAR"

Watch chris

"BEST NEW MICROBRAND DIVER?"

A BLOG TO WATCH

"A lot of value and some very thoughtful design"

BACK IN TIME

"A HOMERUN FROM SWEDEN"

BRUCE WILLIAMS

"not an homage, it's AN original design!"

ABOUT THE PROJECT

We have put more than two years of development into the latest addition to the Tusenö line-up and we are ready to call this one our best model to date. Here is Shellback!

Shellback is an automatic diver watch made in Switzerland.

The name Shellback comes from en old ritual by sea where seamen that crossed the equator would earn the title ”Shellback” – maybe not that hard today but certainly a struggle in the olden days.

The word origins from the toughness of a turtle shell, meaning that a sailor crossing the equator must be as tough as one. On that basis, we created Shellback.

All photos on this page are taken with a sample and some minor adjustments will be updated on the final design – e.g. female end links on the bracelet.

HANDS-ON

SHELLBACK

SPECIFICATIONS

CASE SIZE

Diameter 40 mm
Lug-to-lug 47 mm
Thickness 11,9 mm (glass excl.)

MOVEMENT
Ronda Mecano Calibre R150
Automatic
28.800 BPH
Hacking
40 hour power reserve

GLASS

Double domed sapphire crystal
AR coated

WATER RESISTANCE

20 ATM / 200 meters

WEIGHT

172 gram

DIAL

Sandwich dial
Brushed blue or
High gloss black enamel

CROWN

Screw-in big crown with moulded artwork

BEZEL

120 click uni rotating bezel
Ceramic inlay

CASE

316L surgical grade stainless steel

HANDS

Signature Tusenö hands

STRAP 20MM

Flat top bracelet (diver clasp) +
Tropic rubber (pre-order only) +
Nato strap (pre-order only)

LUME

BGW9 Swiss Super-LumiNova

SPECIFICATIONS

CASE SIZE

Diameter 40 mm
Lug-to-lug 47 mm
Thickness 11,9 mm (sapphire excl.)

MOVEMENT

Ronda Mecano Calibre R150
Automatic
28.800 BPH
Hacking
40 hour power-reserve

DIAL

Sandwich dial
Brushed blue or
High gloss black enamel

WEIGHT

172 gram

CASE

316L surgical grade stainless steel

HANDS

Signature Tusenö hands

GLASS

Double domed sapphire crystal
AR coated

BEZEL

120 click uni rotating bezel
Ceramic inlay

CROWN

Screw-in big crown with moulded artwork

WATER RESISTANCE

20 ATM / 200 meters

LUME

BGW9 Swiss Super-LumiNova

STRAP 20MM

Flat top steel bracelet (diver clasp) +
Tropic rubber (pre-order only) +
Nato strap (pre-order only)


Shellback, a true

strap monster

But, what is a strap monster? Simply put, a watch that you can attach pretty much any strap to and it still looks amazing.

Included with the pre-order you get not only the steel bracelet but also two additional straps – one nato strap and one tropical rubber strap. Color of the additional straps come in the same color as the watch you order.

Beside Shellback we are also working on some Swedish handmade leather straps and a new mesh band that will be available when we get closer to delivery date.

Just like the First Collection all straps feature ”quick change”, no tools needed

LET'S DIVE INTO

THE DETAILS

DETAIL 1 of 5

THE DIAL

For Shellback we designed a so called sandwich dial, basically a double layer dial with one base plate filled with SuperLumiNova and one top layer with the design. The main markings on the dial are then opened up so that the base layer is visible. A nice touch!

The black dial has a beautiful polished enamel dial with white and silver details. The blue dial is brushed with a color that varies from light to dark blue depending on the lighting.

A lot of the design elements on the dial are inspired by sea charts. For example the minute rail features a mixture of single, fixed and flashing lighthouse characters that has been slightly modified.

Shellback is the first model from Tusenö that is going to feature an optional date window (same price).

With the launch of Shellback you can also see our updated logo printed on the dial. Slightly more modern whilst not striving too far from our original design.

DETAIL 2 of 5

THE HANDS

The hands in Shellback share a lot of similarities with the ones in Blackwater but with a few updates to make them even better.

The design is slightly thicker and we have added a bevel in the middle of all hands to add more life and reflections. Just like before there is a hole in the hour hand which nicely swipes over the model name Shellback.

A generous fill of Swiss BGW9 SuperLumiNova has been added to each hand for optimal glow in the dark.

In short, a great design just got even better.

DETAIL 3 of 5

THE MOVEMENT

The beating heart in Shellback is the Swiss Ronda Caliber R150 Mecano. A relatively new movement that competes in the same division as the ETA 2824 and Sellita SW200 (used in Blackwater).

We chose the R150 due to the fact that compared to the other movements they have been able to both slim it down by 0,2 mm whilst still adding 40 hours of power reserve. That is actually two hours better than in the SW200 we used in Blackwater. Small changes that make a big difference in the world of watches.

If you want to know more about our long time relation with Ronda and the after sale service (which your local watchmaker can do), have a look at the video in the bottom of this page.

28.800 bph
Hacking feature
Date alternative
Automatic
40 hours power reserve

DETAIL 4 of 5

THE BEZEL

The bezel inlay in Shellback is made from ceramic, an extremely tough and resistant material that looks great and will stay that way. Just like the sapphire crystal it is close to impossible to scratch the bezel.

The bezel will not only look great in daylight but also at night. Every single marker on the bezel is applied with SuperLumiNova giving you a real lume-bonanza.

DETAIL 5 of 5

CASEBACK & CROWN

With the launch of Shellback you will see our new logo but not only that, we have also created a symbol, The Guiding Light.

We went back to our roots and looked for inspiration in sea charts. The star symbol is a modified sector lighthouse indicator. A sector lighthouse is a navigational aid that guides ships through a safe channel at night, often through shallow or dangerous waters. It felt like the obvious symbol choice and it also looks pretty good, wouldn't you say?

Shellback will be the first model where you will find The Guiding Light both on the crown and on the caseback. Both of which are stamped and both look and feel really nice. In our minds stamped artwork adds a lot of depth and improves the overall feeling.

PRESS PLAY

BRACELET & CLASP

MORE ABOUT BRACELET & CLASP

Since we started development of Shellback back in 2018 we have created and tried a number of different bracelets. What was clear from the start was the fact that we wanted a so-called "flat link" bracelet. The very first prototype we developed was a flat beads of rice link that pretty quickly was discarded. It was a nice bracelet, but it just didn't feel right.

Back to the drawing board. A sharper, edgier design that fits like a glove with the rest of the case and flirts with the old flat tops was developed. A number of iterations have been made on this bracelet and we are now really pleased with it.

We worked hard with the fit of the bracelet and we quickly decided that we should use fully articulating links that hug the wrist incredibly well. Combined with a diver extension clasp with both micro adjustments and 1,3 cm of "on the fly extension" you have a super comfortable and adjustable watch and bracelet for all wrist sizes.

The edgy and flat design of the bracelet offers a very nice play of light that catches your eye. If you look closely you will notice the polished edge that runs all around the bracelet and harmonises beautifully with the case and clasp that share the similar polished edge.

Shellback is a classic example of a "strap monster". A watch that looks good on basically any strap. To make it really easy to switch between your favourite straps the bracelet is equipped with quick change spring bars, it only takes a few seconds to give the watch a new look – no tools needed.

We are now constructing new female end links that will decrease the overall lug to lug distance and offer an even better fit. Pictures and details of this will come soon.

LUME BONANZA

Shellback will look just as good during daytime as it will during night time. The hands, dial and bezel are all filled with a Swiss BGW9 SuperLumiNova to ensure a good read in the dark (or if you just want to show off).

A nice touch in the date versions is the added luminova around the date window to ensure a uniform look.

THE PRE-ORDER PROCESS

On the 12th of August an email will be sent to everyone that has subscribed to the Interest list. This email gives you a one hour pre-access to purchase a Shellback before everyone else.

The email will be sent around 4:00 PM (UTC+2) and will include a password that you will need to enter the product page. More info on this will be included in that email.

Once you have added the watch to your cart, continue to checkout and complete your purchase. Shortly after you will receive an email confirmation from us – this email is the confirmation that you have secured one of the Shellback watches that will be made.

Orders placed outside of EU exclude VAT and will be processed in USD. This is why price in US dollar can be perceived as "better price".

Pre-order payment is a 100% payment of the watch and include free global shipping when the watches are ready for delivery.

Our aim is to deliver the watches during Q1 2022 – please note that delivery date is an estimate and is based on the information we know today. Buyers will receive regular updates as soon as we have any relevant information to share about the progress.

If your shipping details change during this time, please send us an email with the updated contact info.

Once you have received your watch the regular 14 days return policy will take place (more info).

We hope you are as excited as we are! If this is your first pre-order with us, have a look at this blog post to read about our earlier successful projects, we deliver what we promise!

Good luck!

answers to all your questions

Q&A VIDEO

 

FAQ

Will there be a ghost position for the non-date models?

As of now yes there will be. We are in discussions with Ronda but they do not offer a "true" no date movement at the moment. Ghost date has never been a big pet peeve for us, so we have put our resources on other details instead.

What's the time schedule after pre-order?

With the information we have right now we are aiming for deliveries during Q1, 2022. This is preliminary and delays may or may not occur. We will not cut any corners to save a few weeks time, quality is key. If you purchase a watch you will be updated whenever we have any important updates.

Any chance we will see a bigger case during pre-order?

There will not be any other sizes of Shellback in this production. The 40 mm size fits most wrists like a glove, especially with the fully articulating links and the upcoming female end link. We do not close any doors for a larger sized Shellback in the future though.

Is it possible to get a blue bezel and black dial or the other way around?

We do not have any plans to include this option later on either at the moment. However if this would be a regular request, we could look into it.

Is it possible to add engraving to the watch?

We do not offer engraving, but there is a bit of room on the case back if you would like to engrave the watch at your local watchmaker.

Is the glass AR coated on both sides?

Shellback is AR-coated internally only, this way there is no risk of scratching the coating.

What straps are included in the pre-order? Will there be more straps available later?

Included in the pre-order is the original flat top, fully articulating bracelet. More than this you will also have a really soft tropic and a nato strap. The tropic and nato will be in blue or black depending on the color of the watch. Shellback is a true strap monster that looks incredible on just about any strap and with 20 mm lug width it is easy to apply your favourite strap.

We are also working on a few exiting straps for the future. New mesh bands and made to measure, hand made Swedish leather straps.