This product functions well. It was simple to pair with my phone, and I successfully used it with both the Adidas Running and Strava applications. My heart rate readings were generally consistent with my Samsung Galaxy Watch 3 while running, with occasional discrepancies of 2 or 3 beats, suggesting accurate calibration. Delivery was swift. I'm a repeat customer, having owned a previous one from this brand (lost 2 years prior). Thanks!

The product's delivery was swift. I've already tested it with some Android applications, and it appears to provide precise heart rate readings. My sole issue is that I haven't been successful in getting it to function with the "Adidas Running" application.

The product is satisfactory. I appreciate it!

The product is exactly as advertised. It was delivered quickly.