Ear protection

In-ear hearing protection that attenuates 25 dB, to the professional standard, while letting speech and ambient sound through at a safe level — which is the point. Protection you take out to hear someone is protection you aren't wearing, and most hearing damage happens in those gaps. Electronic cancellation reacts in under two milliseconds, so an impact is caught rather than merely muffled afterwards. Bluetooth handles music and calls, with a microphone that suppresses background noise well enough to hold a conversation on site. Around 13 hours a charge, more from the case, rated IP67 against dust, water and sweat.