Features: brand new and high quality The microphone system for smartphone,DSLR Camera. Wireless lapel microphones can be used for advertising shooting, live interview program interview, etc. Operating range is up to 229.66 feet and the signal transfer more stable. The sound quality is incredible clear and noise-free. 6 channel wireless microphone system to avoid other signal interference. Specifications: Operating Range: up to 229.66feet /70m Material:Plastic Size:9x14x2cm/3.54x5.51x0.79in Frequency Band:638-648MHz Response Amplitude: 40Hz-12KHz Channel: 6 Channel Signal Shielding:>80dB Transmit Power: 10dBm Working Power: 2x1.5V AA Battery Working Time: 15H Color:Black Note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Lavalier Microphone System 1x Adapter Cable; 1x Cold Shoe Mount; 1x User Manual;