GoBe is designed to be worn on your wrist, like a watch. You can wear it on either arm - whichever is more comfortable for you.
Wearing GoBe on your ankle is not recommended. The band is not designed for ankle placement, and we do not offer ankle straps. More importantly, we cannot guarantee accurate readings when the device is worn on the ankle.
If you choose to wear GoBe this way, please note that it will be at your own risk.