11 Atmos · 39mm automatic skin diver
Questions

The essentials.

Details about the watch and how Foster works.

What is the 11 Atmos?

Foster’s debut automatic skin diver, with a 39mm case, 48-click bezel and Miyota 90S5 movement.

Which dial colors are there?

Orange, Black, Blue, Gray, White and Green. Explore all dials.

Is this the final run?

Yes. This is the final production run of the 11 Atmos. No restock is planned — when a dial is gone, it's gone.

What are the dimensions?

39mm diameter, 48mm lug to lug, 12.1mm thick with the crystal.

Where are the watches prepared?

Everett and Christian inspect, tweak and regulate each watch in Eugene, Oregon.

Shipping, returns or warranty?

Orders ship from Eugene, Oregon within 1–3 business days, fully insured; shipping costs are calculated at checkout. Domestic orders ship via USPS; for international orders, you choose your carrier at checkout. Return it within 30 days of delivery for a full refund of the purchase price (return shipping is paid by the customer). Every 11 Atmos is covered under our 12-month warranty, fully transferrable. See Shipping, Returns and Our Warranty.

Owner's guide

Care, servicing and warranty.

Watch Operation

Your new 11 Atmos is powered by an automatic Miyota 90S5 movement. The 90S5 is a “no date” movement, so there are only 2 positions: (1) running, and (2) setting. If worn continuously, your watch will automatically wind itself as you go about your day, and will continue to run for about 42 hours after taken off. If your watch has completely wound itself down, we recommend hand-winding prior to wearing.

1. Unscrew the crown until you feel it release from the crown tube.
2. Wind the crown clockwise 25-30 full rotations; you do not need to worry about overwinding your movement, but 25-30 is plenty.
3. While unscrewed, pull the crown out gently (to “Position 2”). The seconds hand should stop completely. Turn the crown clockwise until the time is right.
4. Gently push the crown back in to position 1, and, while gently pressing the crown into the case, turn clockwise until tight.

Watch Care

Water damage: prior to swimming, bathing, or getting anywhere near water, make sure the crown of your 11 Atmos is fully screwed down. If you wear your watch in the ocean, make sure to fully rinse with fresh water after.

Also, while 110 meters is good enough for just about any circumstance you may encounter, this is not a “scuba” watch, is not intended for “saturation” diving, and does not have a dedicated helium release valve (although pulling the crown will do the same thing).

Magnetic Fields: X-Ray Machines, Cell Phones, Microwaves, etc., can all cause your watch to be magnetized (that’s bad). If your watch suddenly starts running very fast, it may need to be “de-magnetized.”

Watch Servicing

Your watch is mechanical (cool, right?), which means that, like any machine, it will eventually need to be serviced. After years of wear, eventually your watch will become less accurate (and it will probably not get better on its own). Additionally, your watch has gaskets that will eventually begin to fail (less cool), which increases the risk of water intrusion. We recommend that you have your watch serviced every three to five years. When the time comes, you can send the watch to us for servicing, or – better yet – bring it in to your friendly neighborhood watch-maker and support a local business.

Timing and Regulation

We personally check all of our watches for accuracy, and to ensure that they are running within factory specifications. The timing card in your box was filled out by one of our Foster team, and is a memorialization of the accuracy of the watch on the day it was quality-checked.

That card is not a guarantee, and there are several things that can affect the accuracy of the watch. Low or insufficient winding, magnetization, the position of your wrist, altitude, temperature, etc. will all affect how fast or slow your watch will run. With that said, by and large, if your watch is worn continuously, we expect that it will run very close to the accuracy displayed on your timing card. If not, give us a call. And that leads us to…

Our Warranty

Your Foster 11 Atmos has been fully inspected in our Eugene, Oregon offices, and is covered under our 12-month warranty. We will cover the costs of all repairs or services for defective watches. That warranty is fully transferrable in the event you sell your watch. Warranty claims should be sent to hello@fosterwatches.com, with the subject: “WARRANTY CLAIM”. Please include the model and serial number, as well as the problems you are experiencing.