NOISE ISOLATING HEARING SAFETY: ANSI-certified 24 dB NRR rating to limit hearing damage in loud work environments.
SAFEMAX TECHNOLOGY: 85 dB volume limiter ensures that your music is always at a safe listening level.
MAXIMUM COMFORT: 20% lighter than other earmuffs with memory foam ear cushions and headband.
UP TO 60 HOURS OF BATTERY LIFE: AIR DEFENDER AM/FM runs on two AA batteries (BATTERIES NOT INCLUDED).