HYS Tc-617-1n In-ear Listen Only 3.5mm Plug 1 PIN Covert Acoustic Tube Earpiece/Headset/earphone For two-way radios, CD Player, MP3 players and similar devices with 3.5mm jack plug For two-way radios with Icom,standard,Yaesu,Adi,Kenwood,Motorola 3.5mm plug .Adjusts to fit either the left or right ear.Ideal for demanding covert security applications where sound clarity and earpiece durability are of paramount importance. The earpiece normal length Approx 65cm(25.6in) ,Extend length approximate :130cm(51.2in) Excellent for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments. With coiled PU cable for retractable use