The Scentee costs $35 and can be filled with different fragrances. Each one costs $5 and is good for about 100 sprays. You can choose from coffee, lavender, rose, rosemary and strawberry. The Scentee starter kit includes one scent cartridge, a manual, USB charger and a mount. The accessory has been around previously in Japan, and is now being offered to America via online sales. The app has been on iTunes since November, but has not been available in markets outside of that country.
The Scentee works for the Apple iPhone 4s, Apple iPhone 5, Apple iPhone 5s and the Apple iPhone 5c. It also works on the Apple iPad 2 and the third-generation Apple iPad. There is one Android handset that supports the aroma sprayer, the Samsung Galaxy SC-04E, which can be found only in Japan.
You can click on the rather long and convoluted video below to see the Scentee in action, or click on the sourcelink to view the accessory's web site.
source: Scentee (translated) via electronista, Gizmodo