Literally just purchased one at Bic Camera.
Liking it so far. I travel a lot for work and this is way better than trying to carry around a klunky ergonomic mouse.

I ordered 2 when these were in Kickstarter for my boyfriend and I. It was a great purchase. You didn't have to worry about your mouse being smashed during travel.
Slim. Easy to connect. Fast charge (that lasts). Ergonomic enough. Totally recommended

The mouse I used before was an ergonomic mouse, so it had many functions, but compared to that, this one has fewer functions, but it is definitely lighter and doesn't get dirty. It's easy to carry around, and I ordered the silver one, and it's so pretty!! I think I made a good choice. The mouse does get more comfortable once you get used to it ^^

おしゃれで軽くて最高なのですが、充電して3時間くらいしかもたず・・・こんなに身軽なんですから仕方ないと思いつつ。充電サイクルの「こつ」をつかむことが必要かと思いながら、それでも周りからの「なにそれおしゃれ！」という賛辞を気持ちよく、使っています。これからも素敵な製品開発がんばってください。

구매한 모든 컬러가 너무 예쁘고 뭣보다 납작하게 갖고 다닐 수 있어서 정말 실용성 갑인 제품이라 좋습니다. 너무 예쁘고 독특해서 몇개는 지인한테 선물로 줬습니다. 출장이나 외근 많거나 한 직장인 사장님들 유용할듯 합니다. 굴러다닐 일 없어서 맘놓고 가방에 넣고 다닙니다.
멀티 연결될 날을 기대합니다!

This is my favorite item I bought this year. I usually go out to work a lot, and it's so comfortable. I'm thinking about buying other colors later.