1、Wireless Mic: You can clip the lavalier microphone on the collar, and the wireless design will free your hands. 2、Easier Using: 2.4G digital wireless transmission enables 15 meters long communication distance, very reliable. 3、Great Pickup: Omnidirectional condenser microphone ensures 360 degree all round balanced pickup for clear voice. 4、Wide Utility: Can use in conjunction with cell phone, camera and so on, suitable for interview, recording, etc. 5、Easy to Carry: Comes with a small size and a light weight, causes no burden, very convenient to carry for work. Item Type: Lavalier Microphone Material: Metal + ABS Colour: Black Receiver RX-1: Working Frequency Band: 2.4GHz (2405-2478MHz) Modulation Mode: GFSK digital modulation or demodulation. Frequency Response: 50Hz-16KHz Delay Time: <5ms Sampling Rate: 32KHz x 24bit Signal to Noise Ratio: >90dB Dynamic Range: >95dB Communication Distance: Approx. 15meter / 49.21ft (without obstacles). Power Supply: 1 x built in 3.7V rechargeable 702040 lithium battery 600mAh (Shipped with built in battery) Battery Life: 5 hours. Working Temperature: -10℃~+55℃ Transmitter TX-1: Working Frequency Band: 2.4GHz (2405-2478MHz) Modulation Mode: GFSK digital modulation or demodulation. Transmit Power: 10mW Pickup Mode: Omnidirectional Audio Input: Built in microphone and external lavalier microphone input. Antenna: PIFA antenna. Control: Switch, channel switch +/- button. Communication Distance: Approx. 15meter / 49.21ft (without obstacles) Power Supply: 1 x built in 3.7V rechargeable 702040 lithium battery 600mAh (Shipped with built in battery) Battery Life: 5 hours. Working Temperature: -10℃~+55℃ 1 x Transmitter 1 x Receiver 1 x Lavalier Microphone 1 x USB Charging Cable 1 x DSLR Connection Cable 1 x Cell Phone Connection Cable 1 x User Manual