4K HD Wallpaper: Invicta Watch
If you're enthusiast regarding hand watches, then should see this image at full size. From courtesy of Phillip Kisling the photo can be saved free under CC0 license and use in your desktop backgrounds, homescreen phones or in other projects that you might have (blogs, apps, social media, webdesign projects...).
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)