It is always the way, you need to make a quick calculation and there is no calculator handy. With this device, you are never going to be without a calculator because this is a mouse mat that is also a calculator. There are no batteries required as it is powered through the USB port.

Features:

10 digits Calculator

Memory Calculation: M+, M-, MRC

Can used as Mouse Pad

3 Port USB Hub

USB 1.1

Super slim, only 7mm

Blue Moody Light

Calculator on/off switch (turn off when use as a mouse pad)

Can use external power adapter (5V, not included)

Using 1 x LR44 battery (Battery included)

Dimension: 21 cm x 18 cm x 0.7 cm

Weight: 338g

Packages:

Illuminated Calculator with USB 3 Port Hub and Mouse Pad x 1

USB Cable x 1

User Manual x 1

Priced at $17.99

Source [Coolest Gadgets]

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