Universal 3.5mm Jack PTT Acoustic Hollow Air Tube Anti-Radiation Earphone Xfox Single Channel Earpiece with PTT Answer Switch Compatible with iPhone Samsung LG Moto ZTE BlackBerry Mobile Phones Specifically designed for you to keep away from phone radiation. Built-in microphone, Anser/Off button. The hidden micro-speaker is located in the head of PTT switch. Low-profile, flexible, transparent acoustic tube transmit sound in high quality the transparent tube would be hardly noticed by others around you. 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. Compatible with all phones that required 3.5mm jack. Excellent for use in FBI, police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments.