Sony WI-C310 Wireless In-Ear Headphones with Mic, White

This is the first time I use Bluetooth headphones. Honestly, I was very impressed with the sound quality and specially the bass these tiny buds produce. In my experience I like hearing myself when I talk because it helps me control the volume. I use them at work connected to my iPhone and paired to my PC at the same time (awesome!). All my co-workers use regular headphones with no sound feedback and they all talk extremely loud because they don't hear themselves. The only thing I have encountered is that every time I chat using WhatsApp on iPhone while paired to the headphones, the Volume symbol appears, and it turns it up automatically. Seems a random problem because not always shows up while chatting. No big deal. I just lower the volume once I finish using the app. Could that be fix via firmware update? Very good Bluetooth headphones also considering the price! Thanks.

Bought at the start of latest lockdown so I can listen to podcasts whilst getting exercise. Simple to set up, good sound and work well when disturbed by incoming calls. Lack of noise-cancelling of my WF100X balanced by smaller weight and far, far longer battery life for those really long walks