Features Ultra slim bodypack transmitter with sturdy magnesium alloy housing. On the top features mute switch, mini-XLR connector and antenna. Backlit LCD displays all operational parameter information. Innovatively designed battery cover allows easy access to operate buttons and prevents accidental operation. Mute button with remote-control jack for easy activation of mute function. Stable PLL circuits. Automatically synchronized with the receiver’s frequency by MIPRO’s patented ACT™ function. Can directly match to high-low input impedance for microphone or guitar without switching. The input sensitivity is adjustable with six selectable gain settings. Mini-XLR input with secure screw lock connector for lavaliere / headworn mics and guitar. Adjustable belt clip allows wearing transmitter in up or down position. High-efficiency circuitry design provides 12~14 hours of operation from 2 AA batteries (depending on the battery quality). Specifications Frequency Range US Band : 482~698 MHz EU Band : 482~790 MHz Bandwidth 72 MHz Oscillation Mode PLL Synthesized Channel Set-Up ACT Sync RF Output Power 10 mW / 50 mW switchable (country dependent) Spurious Emissions <-55dBc Gain Setting +12dB, +6dB, 0dB, -6dB, -12dB, -18dB (6 settings) 0 dB = input microphone sensitivity Max. SPL N/A Max. Input Level 0dBV Mute Connector Optional MJ-70 remote mute switch LCD Display Group, Channel, Frequency, AF gain, Frequency band, RF power, Mute mode, Lock status, Battery status and error codes Capsules Headworn: MU-13 / MU-23 / MU-210 / MU-53HN / MU-55HN Lavalier: MU-53L / MU-55L Battery Type 2 AA alkaline Current Consumption High Power: approx. 161mA ; Low Power: approx. 120 mA