This bundle contains 2 items: Shure SE215 Clear Sound Isolating In-ear Headphones and Shure EATFL1-6 Triple Flange Sleeves (3 Pair) Sound Isolating Design Comfortable sound isolating sleeves block up to 37 dB of ambient noise. Sound isolation technology prevents outside noise from interfering with your listening experience, whether on-stage or on-the-go. Shure Sound Isolating Earphones require a proper fit to achieve the best sound. Unmatched Personalization and Comfort Ergonomic, Professional Design Lightweight, low-profile shape with optimized nozzle angle is designed to rest comfortably in the ear. Over-the-ear configuration keeps cables out of the way.

Reduces outside noise by 25 decibels 50M/M dynamic speaker mylarcon Frequency response: 20Hz - 20Khz