Do not trust this company
First of all, they are using a stock image of a positive Trustpilot score on their website, when in fact this will be their first review. Secondly, I believe what I received when I ordered my cutting edge bleo band is a "Smart Bracelet Health 2208A", available on AliExpress for a fraction of the cost. I purchased it last year to compare it to my Oura (which I've previously worn at the same time as a Whoop and found to have HRV values very well correlated) and the readings are absolute garbage. Knowing it's really a $30 Chinese band this doesn't surprise me. The app was heavily flawed and practically unusable, I would steer well clear of this company.
By Fraser Y.