The big disappointment for Samsung gadget owners is that the Gear does not work with most of its phones and tablets. The Gear needs the Galaxy Note 3, a smartphone with a giant 5.7-inch screen and a digital pen, and the Galaxy Tab 10.1, a tablet computer. Both will go on sale later this month. At a later date, it will be compatible with the Galaxy S4, released earlier this year, and the Galaxy Note II, which came out late last year.In some countries, mobile carriers will bundle the Gear with the Note III on a two-year contract. In other places, consumers will be able to buy the Gear without a phone contract. Overall, the Gear gives us more ways to imagine what wearable computing gadgets might do for us in the future. The Gear is smart but in a limited way, as it's essentially a slave to the smartphone it's paired to. After my brief hands-on experience, I decided the first generation of the Gear was cool but not compelling enough to convince me to ditch my current device, an iPhone. ___ AP Technology Writer Youkyung Lee can be reached on her Twitter at: http://www.twitter.com/YKLeeAP . AP writers Bree Fowler and Joseph Pisani in New York contributed to this story.