Wristboom is a Bluetooth speaker that sits on your wrist. You can do stuff like stream music to it, or take calls. Unfortunately you can’t start any calls though, because there’s only one button, and that just turns the device on and off, and accepts incoming calls.
Also, it is big and bulky. Pretty ugly too. I guess grandmothers wouldn’t mind it. As dumb as this thing looks, those with limited mobility will likely find it useful. Some people have trouble getting to that phone that’s ringing in the other room after all.
Wristboom is currently raising funds for production over on Indiegogo, and a pledge of at least $20(USD) will get you one of your own. If it ever becomes a reality this will be great for older folks.