Portable ultrasonic microphone jammer SEL-310 Komar
SEL-310 "Komar" is a small size microphone (including mobile phone microphones) and audio recorder jammer for personal use that helps secure sensitive audio information during conversations at meetings indoors, in the open air, or inside a car. It can be easily and quickly deployed in a car interior, on a table in a meeting room, or camouflaged inside a modified messenger bag, briefcase or purse.