The Roku Express 4K+ normally retails for $39.99. As of Jan. 21, it's on sale for $24 at Amazon. ... and the Samsung Galaxy Watch 7 is currently down to its lowest-ever price.

Last year, Sony launched the Xperia Z5 Premium, the world's first smartphone with a 4K display.It has the same resolution and pixel density as Samsung's special VR display. It's possible Samsung ...