Background image for android wear notification

Question

I want to set background image for Android Wear notification. What should be the size of the image?

Answer 1

The documentation for Android Wear specifies that the background should be 400 x 400 if it should not use parallax scrolling and a size of 640x400 if it should support parallax scrolling.

The image should be put into the drawable-nodpi folder of your android app.

I couldn't make out a difference in the scrolling with different backgrounds. The bigger background is cropped to 400 x 400 and even if scrolling nothing outside the 400 x400 area is shown.