Product Type: Dual Wireless Microphone System
Receiver: SR40 Mini Dual stationary receiver
Transmitters: 2 × HT40 Mini handheld transmitters
Microphone Capsule Type: Dynamic
Polar Pattern: Cardioid (unidirectional)
Frequency Band: US25A/C (US25A at 537.500 MHz and US25C at 539.300 MHz)
Audio Bandwidth: 40 to 20,000 Hz
Signal-to-Noise Ratio: Typ. 105 dB(A)
Total Harmonic Distortion (THD): Typ. 0.8% at 1 kHz
RF Output Power: Max 10 mW
Audio Outputs: 2 × Balanced ¼-inch (6.35 mm) jack outputs with individual volume controls
Operating Range: Up to 20 meters (66 feet) line of sight
Power Requirements (Transmitter): 1 × AA size alkaline battery per transmitter
Battery Life: Up to 30 hours per AA battery
Power Supply (Receiver): Universal power supply with EU/UK/US/AU adapters [1, 2, 3, 4, 5, 6, 7, 8, 9]