Well I do sweat a lot even on doing simple things. So far they are still working. Earin says they are sweat/splash proof but they are not water resistant meaning you can't take them for swimming.
How's the stability? Any wings or locks with these?
They don't have wings, but they do sit flush in my ears. I tried running with them and they don't fall off my ears. The earbuds are so light I simply do not feel them and they don't hurt my ears.
There are no IP rating posted on Earin's website. They last 3.5 to 4 hours on my iPhone X 70% 80% volume. It could be different on a other phones and bluetooth versions. I made a test and blasted the volume 100% (not plugged in my ears of course) and it lasted 2.5 to 3 hours with continuous music playing. I don't have the M-1, and I never purchased that in the past. The M-2's auto turn off when you place them in the case, and auto turn on when you remove them. The earbuds attached magnetically and they fit snuggly in the case. As for latency, I did not encounter any latency, even when I use them in my laptop computer.
I only had a quick demo of the Apollo 7S, the sound signature is slightly V shaped, and fun sounding. The bass is not over powering and the highs are extended and not that sibilant. The sound signature is almost similar to the Zolo Liberty+ using the balanced EQ in the Zolo Life app. I demoed this on an iPhone so no aptx.
