Had them for a few days now. Used them nonstop for a good 5 or 6 hours. Battery held up great.
Yes, the speakers are not greatest quality. But they're perfectly sized to not feel them through the padding.
Installed them on 2 Modular Helmets without an issue.
The only downside is the clips that hold them to the helmets. They are not wide enough. Not even the metal ones. No issue, nothing a bit of 2 sided foam tape cant fix.
I seriously recommend this set