The Digital Photo Frame Keychain for the price is quite ok. The screen images on its 128x128 pixel resolution is still acceptable, but you can here not expecting brilliant colors. The battery life under normal use is okay. Large drawback however, is that the USB cable is defective. In the very low price which is bearable, however.
Note to all hobbyists:
For the small price of this digital photo frame you get a 128x128 pixel display and a colored-in lithium battery with charging circuit. Interested you do not get this at the various hardware electronics mail order companies.