OMNITRONIC UHF E-FLEX is a lavalier microphone designed for connection to an E-FLEX bodypack transmitter. It can be attached to a tie, shirt, or collar and uses a cardioid pickup pattern. The condenser capsule has a 9.8 mm diameter and operates from 1–5 V. It provides a 20–16,000 Hz frequency range, –47 dB sensitivity, 680 ohm impedance, and a 1.25 m cable terminated with a three-pin female Mini XLR connector. The microphone has a plastic housing, black finish, and weighs 0.02 kg.