Audio Input Impedance: Low impedance unbalanced

Microphone Connector: Standard three-pin XLR, with 9V DC phantom power for lavalier mics

Frequency Response: 50Hz - 15KHz ±3dB

Controls: Transmitter ON/OFF, Audio ON/OFF and Level Trim Adjust

Indicators: Low Battery LED

RF Power Out: 50 mW (max. allowed by FCC)

Harmonic and Spurious Emissions: < -40 dBm

Battery: 9V alkaline

Battery Life: 8-10 hours

Dimensions: 1.5" W x 4.2" H x 1.5" D (3.9 x 10.5 x 3.9 cm)

Weight: 7 oz. (192 grams) including battery