Amazon Dash Buttons land in Japan

Amazon has started offering its Dash Buttons in Japan, a few months after the product expanded outside the US for the first time with launches in the UK, Germany, and Austria. The Wi-Fi-connected gadgets allow you to order products from their associated brand just by pushing the button.
Each Dash Button costs 500 yen ($4.40) in Japan, but you'll get a 500 yen discount the first time you use it, so the button itself is basically free. As with elsewhere, the buttons are exclusive to Amazon Prime m