On the main screen, press Settings > Advanced > Upright range.
There you can define your Upright range. When you’re out of this range, the GO will consider you slouched.
The hard part isn't knowing — it's remembering
The UPRIGHT GO 2 buzzes gently the second you slouch, so good posture becomes automatic. Most users feel a difference in under 2 weeks.
Meet UPRIGHT GO 2 — from $79