The House of Marley.LLC BORII ユーザーズマニュアル

The device has been evaluated to meet general RF exposure requirement. 

To maintain compliance with FCC’s RF exposure guidelines, this equipment

should be installed and operated with a minimum distance of 20cm between

the radiator and your body.

USB connection is used for engineering purposes in the factory or an

authorized service facility and not used by the end-user。