In the past few months, we have covered a bunch of smart wearable devices. To-Do may not connect to your phone, but it does let you write down your to-do list on your wrist. It has a lightweight wooden case with a compact size and leather straps. You can use the chalk marker to write on and a leather kerchief for cleaning.
The above video gives you a better idea what this product is all about. More information is available here.