You can read the instructions for our Backbone here. 23 September 2019 12:50 Updated If you would like to read, download or print the user manual of your Backbone again, you can open it here. Related articles How do I attach my Backbone to my smartphone? My Backbone silicone band is broken. The silicone tape on the backbone is too tight. Contact Form You can read the user manual of our High Five®, High Five®Signature and High Five® C here.