HQRP® Hands Free with Earpiece and Push-to-talk Microphone! Clip this hands free earpiece onto your shirt and begin using your radio device to communicate discretely and easily, whether you're in security, retail, or hospitality. The earbud fits snugly in the ear with easy and keeps your conversations private! Provides excellent durability, reliability and performance in low-profile environment. Ideal for demanding covert security applications where sound clarity and earpiece durability are of paramount importance. It has a remote microphone with push to talk button you can clip almost anywhere. The lightweight ear loop fits snugly around the ear and keeps your conversations private. Perfect sanitary solution for conditions where users must share headsets or are uncomfortable with headsets that enter the ear canal. Excellent for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments!Resistance: 90Ω±15%;Sound Pressure Level: 115dB S.P.L;Rated Power: 500mW;Max Power: 800mW;Microphone Sensitivity: -34 ± 2dB RL=2.2KΩ Vs=3.0V(DC) 1KHz 0dB=1V/Pa;Microphone Resistance: 2.2KΩ 1kHz (RL=2.2KΩ).