Fresh out of the box? That’s a bummer. Sometimes our Fusion Bio gets so excited, sitting on the shelf, waiting to be bought, it runs out of juice. It will need a long rest in the charging cradle before it can perk up again.


Plugged in but still no lights? Use a paperclip to press the reset button on the back of the charging cradle with the Bio plugged in and charging. Don’t use a thumbtack though! Our devices don’t respond well to sharp objects.

You might have a bum USB cord - you can check this by plugging the Striiv cord into any other devices you have lying around that use micro USB (think ereaders or certain phones). If your cord doesn’t work then let us know at Also try alternate charging sources (wall outlet vs computer usb port). 


If the Fusion Bio turns on when plugged in and displays either a 4 digit code or, this signals that your device needs to be paired with the app through the process outlined here.


Still nothing? Ok, you tried. Now it’s our turn to give CPR. Shoot us an email at and let us know what you've tried.