For a better idea of how the wallpaper looks click on the thumbnail for a larger preview. Presented in no particular order.
MB&F
This stands for Maximilian Büsser & Friends, and they have some very cool wallpaper on their site featuring photographs of some of their uniquely designed watches, or “Horological Machines” as they like to call them. Including the MB&F Frog pictured and the aeronautically inspired “Thunderbolt”
There are 8 wallpapers with sizes up to 1600×1200.
Source: Link
Greubel Forsey
Greubel Forsey has 7 different wallpapers featuring their amazing complication watches, they’re really stunning and a great way to admire these mechanical marvels.
They’re available in 1920 x 1200 resolution only but can easily be downsized if necessary.
Source: Link
Hublot
The Hublot Black Caviar Bang has an 18k white gold case and features hundreds of precision cut black diamonds, priced at $1m its out of reach for most of us but you can make your desktop look like a million bucks for nothing.
Size is 1920×1080
Source: Link
Urwerk
Although not labelled as wallpaper, the photos available for download on the Urwerk site are easily high definition enough to use as desktop wallpaper.
The one pictured is available at 6152×7443 resolution!
Urwerk has a large selection of extremely cool images of all their models, to make your desktop look very sweet. The Black Cobra model is pictured.
Source: Link
Tag Heuer
Tag Heuer have a large selection of 20 watch wallpapers featuring many of their famous models including the Steve McQueen Monaco, the Calibre (pictured) and more obscure models such as their amazing belt driven V4.
No longer but try this:
Source: Link
Blancpain
Luxury Swiss watch manufacturer Blancpain are famous for their iconic dive watch, the “Fifty Fathoms” (pictured) selected by the United States Navy and worn by Jacques Cousteau, as well as for creating one of the most complicated mechanical watches ever, the Blancpain 1735.
12 types are available with sizes up to 1600×1200.
Source: Link
Chopard
Chopard’s wallpaper features models such as the LUC Engine one (pictured) a complicated Tourbillon watch created in honour of their 150th anniversary and more sporty models such as the Mille Miglia which was developed to mark the partnership they have with the annual Italian rally where vintage and classic cars take part.
6 Wallpapers with sizes up 1600×1200
Source: Link
HD3 Complication
HD3 Complication has high definition photographs of their new “Slyde” model that can be used for wallpaper.
The “Slyde” features an ingenious customiseable display that allow for multiple different watch faces to be uploaded, you can read more here.
Source: Link
Omega
As you can imagine from a well known brand such as Omega, quite a few cool watch wallpapers including ones not only featuring their watches but also James Bond, as well as some of the Speedmaster “space watch” as well as some on the Deville and Constellation models.
“Be greeted by a favourite OMEGA timepiece or another attractive graphic each time you turn on your computer!” – Omega
Source: Link
Frederique Constant
Swiss watchmakers Frederique Constant have a Flash desktop background showing their semi skeletonized Heartbeat Retrograde model featuring animated hands and visible balance wheel.
Available in one size only.
Source: Link
Glashutte
German watch brand Glashütte Original has earned a reputation for excellent high-end watchmaking and they have a large selection of wallpaper featuring photography of their better known models in a wide range of sizes from 320×240 all the way up to 1920×1299
Source: Link (select the “Inspiration” menu and choose “Wallpaper”)
Oris
Nicely done photo’s of various models ranging from their divers to more formal models
The 3D watches are also very slickly done.
12 different types with sizes up to 1920×1200
Source: Link