SanDisk Clip Sport vs SanDisk Clip Jam

I’ve been using the clip sport for a couple of years now, and I’m thinking about buying one for my friend… and I saw that the Clip Jam came… so I wonder what’s the difference between them? they look the same to me

the jam is smaller with a monochrome screen. other than that the features are the same. 

The Clip Sport has a 1 sq inch color viewing screen that displays album art (folder.jpg) at 200x200 pixels resolution.

@drlucky wrote:

the jam is smaller with a monochrome screen. other than that the features are the same. 

Not exactly the same. How do you account for the Jam getting only 18 hours of battery life while the Sport gets 25 hours??? Both use a 220mah battery. If anything, I would expect the Sport with a larger screen to get less battery life. Does the Jam have higher power output, better sound quality, or is it just using some less efficient circuitry?