Here are downloadable versions of the BPM Vision's user guides:
US User Guide: BPM Vision - US User Guide.pdf
EU User Guide: BPM Vision - EU User Guide.pdf
https://support.withings.com/hc/ja/sections/33243285893521-BPM-Vision
https://support.withings.com/hc/ja/sections/33243319031185-First-Steps