SenaExpand Mesh Multi-Sport Mesh Intercom Communication Headset for Hiking, Rock Climbing, Fishing, Hunting and more

I've searched forever for something like these for when I go out cycling with my sister, I tried several different kinds, tried walkie talkies, mobile connections, nothing was what I wanted. I happened to find these and I bought 2 of these to see if they work, and they work great.The instructions are a bit confusing and could do with a better layout/design but have all the information there.Once I'd figured out what each of the buttons do I managed to set them up on a bluetooth mesh and they instantly connected with a nice voice telling me so.There is a slight delay in when you talk and the other person can hear you but that is to be expected with all voice activated mics and headsets and you only notice it when standing/cycling next to each other and can hear their real voice. The voice activation only responds to your voice and doesn't activate when a car goes past you or the wind blows hard, The mic is wind shielded so it works good.The range is very good and from what I have read about bluetooth mesh is that it can extend the range between people when you have more than two people connect, so the person at the front can hear the person right at the back.Comfort, when cycling they fit just below my helmet as they angle down at the back of your neck slightly, I barely notice them when I get going.I'm now thinking about buying a third device for when my other sister joins us...but as she's not so active in cycling now I'll wait.