Mini white board that you can wear.

Writing on the palm of your hands just doesn't cut it anymore like in the old high school days. But don't worry because now there is the Wear N Write Wrist Band! An accessible notepad for people on the move. It has a stretchable band, very lightweight (2.4 oz) and can be re-used multiple times. No cutting edge technology, no batteries just pure simple practicality. Useful for people who need to take quick short notes on a busy environment like engineers, nurses, managers and so on.

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Buy on www.amazon.com
Under $25