In original packaging item, may require some assembly. See link for more details:

Note: Tested and works

https://www.target.com/p/oral-b-io-series-2-electric-toothbrush-black/-/A-91106331niMCUGrp7rAUe3JB7Vxfb8-87P6N__K7xSq8RoC7UEQAvD_BwE