You can control your phone from your wrist and it's not a smart watch.
This is really designed for people who wear out the phone's on and off switch and home key.
Its called the Halo Band.
It's worn on the wrist and an app syncs it to your smart phone.
Here's what the Halo Band does: common smart phone tasks like unlock your phone, take photos, send alerts, and a few other things like send your business card electronically from your wrist to someone's smart phone without touching your phone.
Right now through their Kickstarter campaign the Halo Band costs $25.