Specifications: •Frequency Range: 500 MHz - 599 MHz •Channel Distance: 0.5 - 2.5 MHz •Frequency Stability: ±3 ppm •Frequency Response: 40 Hz - 20 kHz •Receiving Distance: Up to 30 meters •Voltage: 3.7V, 800mAh lithium battery •Charging Time: 3 hours •Usage Time: 5 hours (dual transmitter package) •Connectivity: UHF (Wireless) •Compatibility: Works with dynamic and condenser microphones, mixers, recorders, speakers, amplifiers, and sound reinforcement systems.