Klein Tools AESEB1S Situational Awareness Bluetooth® EarbudsKlein Tools AESEB1S Features SMART SENSE Bluetooth Earbuds with Situational Awareness keeps users informed of their surroundings and ready for action through continuous communication Intuitive amplification of low level sounds enhances speech and promotes clear communication between co workers High impulse, impact or constant sounds are compressed down to a safely listening level of 85dB Block up to 26dB with thoughtfully engineered NRR memory foam