IMO, communicators from Sena and Cardo are grossly overpriced, as well as being needlessly overpackaged.
I've had both over the years and most recently had a LS2 Ride Pal 3, a proprietary unit to go with my modular helmet. Based on a Sena SMH10. Useless device, poor controls, lousy battery life. The Ride Pal would last 6 - 7 hours on a 10 hour ride day.......... and after 3 - 4 years was down to 3 hours forcing me to connect it to a battery pack before lunch. Garbage.
So, after a bit of online research I purchased this in June. I bought the single, you can also buy it as a set.
Easy to install on the helmet, pairs with Bluetooth devices well, makes and takes calls. I use it primarily to listen to music. So far, battery life has been great. Still at 50% after a full day riding. I haven't paired it with another rider's device, but have no reason to believe it would not do this properly. Buy it, try it and return it if you don't like it or it does not perform as expected or stated in the spec. Amazon purchases are relatively risk free,
How long will this device last? No idea really, but it is likely no better or worse than the Sena and Cardo that died after 4 - 5 years and it is a fraction of the cost.