Write notes on your hand with the Wemo Wearable Memo Band. This slap bracelet conveniently fits around your wrist, so you always have a place to jot down your notes. Wemo is a must-have accessory for hospital staff, engineers, or anyone who wants to create and refer to reminders. The wearable memo band is also reusable, allowing you to write your notes using a permanent pen. However, it only works with an oil-based pens meaning you can’t write on it with a pencil or water-based pens. To remove the ink, just use a regular eraser. Wemo comes in four colors, and each color features a different background design. The beige band has grid dots and rulers while the blue has lines. Likewise, the green band has white grid dots, and the white one is plain with a ruler along one side.