These just so finicky, they’re a pain to use. The heartbeat sensor didn’t connect at first, but then I found performing a ritual of turning on the headphones, connecting to my phone, turning off my headphones, turning off and on my phone, then turning on my headphones finally gets the heartbeat sensor connected. I have to do this every time I use them even though I have latest firmware and IOS. Also the wind noise while running is so loud, you have to turn the music up to hear it properly. These aren’t cheap, and I feel like it was money wasted.