Casio introduces a wireless USB solar calculator. Basically the wireless USB connection on the calculator will be used to control the 10 key type pad on your keyboard. This calculator will begin shipping at the end of this month and priced between $45 – $63. 
The Casio MZ-120WL and Casio JZ-120WL calculators are bundled with USB dongle to enable a wireless connection to use it as a 10 key number type pad. The Casio MZ-20 is connected directly via USB. All new Casio calculators have solar cells. The Casio JZ-120WL has some more calculator features.
Source: [i4u]
