I have paired this product with a Garmin Fénix 6X, 1040, 1050 as well as a Magene 606. The connection works via BLE (not ANT+). This must be explicitly selected for all devices when pairing. The device tends to be worn on the upper arm. I can't report anything negative about the data quality. The measuring principle seems to me to be the same (green LED). The operating instructions are very sparse ;)

Good day
Maybe a little late for you 😅
Tested it yesterday against the HRM Pro. It was surprisingly accurate even during tempo intervals and responded quickly to the "changes" in heart rate...