Center Stage 400

Yes, Wings Alpha comes with IPX5 water and sweat resistance which means you can use them in rains and light splashes. However, you cannot submerge them in water so you cannot swim wearing them.

One single charge of earbuds provides 3-4 hours playtime. With the 400mah total playtime is 16 hours.

Yes, you can take any one earbud out of the case and that earbud will connect to your phone. If during single earbud usage, you want to use the other one also, you can take out the other earbud from the case and both earbuds will auto pair with each other.

Yes you can hear the voice from both earbuds on call.

There are a total of 2 mics. 1 mic in each earbuds.