SuperEar Plus Model SE7500 is a simple personal sound amplification Product (PSAP) that boosts all ambient sound 50 decibels for a total output of 107 dB. SuperEar personal sound amplifiers from Sonic Technology Products have been the on the market over 35 years. The sleek design of the SuperEar Plus personal sound amplifier increases ambient sound gain 50 decibels using a multi-element, high sensitivity 90 degree swiveling microphone. The microphone and carrying pouch help eliminate annoying case noise. Includes both comfortable premium stereo headphones as well as unobtrusive earbuds. Stylish design weighs just 3 ounces, measures 3.05 " x 2" x .75". Auto Shut Off after between 30-45 minutes preserves battery life. Headphones are compatible with SuperEar Hygienic Disposable Earpad Covers for Multiple Users and SuperEar Headphones Extension Cable (sold separately). As a personal sound amplifier (PSAP) the SuperEar boosts all ambient sound including background sound.