The Backcountry Access BC Link 2.0 Radio is built to handle tough outdoor conditions, including some wetness. According to the manufacturer, it's water-resistant, so it will be fine in light rain or snow.
But, it's not fully waterproof, so you shouldn't submerge it or expose it to heavy rain for too long. From our research, it looks like a lot of people find the water resistance perfect for backcountry skiing or hiking, where you might get a bit wet but not soaked.
One thing to note is that it charges with a Micro USB port, which isn't as modern as USB-C.
If you're used to USB-C devices, you might find this a bit of a hassle and need to carry an extra cable. Still, this doesn't seem to be a big deal for most users.
On battery life, it has a built-in rechargeable lithium-ion battery. The manufacturer says it performs well in the backcountry, and our research backs this up—users generally say the battery lasts through long outings, which is crucial when you're away from a power source.
So, in a nutshell, while it's not fully waterproof, the water resistance should be good enough for most typical outdoor activities. Just remember the Micro USB charging port and plan your gear accordingly for your trip.
