4K HD Wallpaper: Light Bulbs
You have to try this photography took by Tao Tsai and shared from his courtesy under CC By license in your desktop backgrounds and homescreen phones. Looks so good as phone background!
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)