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! This headset is for use with radios that require a dual plug 2.5mm/3.5mm molded connector approximately 1/2" apart. Speaker specifications: OD: F16mm; Resistance: 90Ohm±15% at 1000Hz; Sound Pressure Level: 90dB±3dB at 1000Hz; Rated Power: 100mW; Max Power: 20mW.Microphone specifications: Type: Electret microphone; Sensitivity :-40dB±3dB at 1000Hz (0dB=1V/Pa); Resistance: 2.2KOhm.