![](https://static.dezeen.com/uploads/2010/05/dzn_Electronic-Calculator-XS-by-plusminuszero-5.jpg)
Electronic Calculator XS by plusminuszero
More from plusminuszero: the Japanese design company also launched this credit card-sized calculator in Milan last month. More
More from plusminuszero: the Japanese design company also launched this credit card-sized calculator in Milan last month. More
In Milan last month Japanese brand plusminuszero launched a watch where the strap slots through the back of the case. More