SunRise Traveler Portable
Finally, you can minimize jet lag and maximize your energy while traveling. A handsome 4 ½ in diameter sphere of durable plastic, the fully portable SunRise Traveler can be powered either by 4 AA batteries or internationally compatible USB power. Easy to quickly program, it has 15-minute sunrise and sunset features, and a pleasant chirping back-up alarm. It also has a built-in flashlight, and a light bright enough to read by. Standard US power adapter included.
More information: http://www.biobrite.com/shop/sunrise-traveler/