Features: The frequency battery indicator and signal strength bar are clearly and intuitively displayed on the LED screen. Built in dual antenna that resist to WiFi and electromagnetic etc. features of -jamming and has longer transmission distance(30m). 24-bit/48kpbs high resolution with Mic/Line two modes to switch from. Strong stable and fast receiving signal. Small wireless system lithium battery inbuilt plug and play easy to operate. Support with dynamic microphone and condenser microphone with built-in power supply. Equipped with XLR female to 6.35mm male microphone adapter compatible with audio mixer recorder speaker PA system amplifier etc. Provide stable and reliable wireless transmission. Specifications: Material: ABS Number of Channels: 6 Transmission Distance: About 30 meters Duration: Stable 6 hours Power Supply: Built in USB charging Delay: About 5ms Sound Dynamic: 110dB Sampling Rate: No 24bit / 48 kpbs audio Frequency Response : 20Hz-20kHz Antenna Impedance: 50Ω SNR: 110dB Battery: 3.7V 400mAh Li-ion battery Support Microphone Types: Dynamic microphone and condenser microphone with built-in power supply Item Size: 70 * 30 * 30mm / 2.76 * 1.18 * 1.18in Item Weight: 200g / 7.05oz Package Weight: 300g / 10.58oz Package Size: 16.5 * 13.5 * 5.5cm / 6.50 * 5.31 * 2.17in Packing List: 1 * 1 * Receiver 2 * Transfer Plug 2 * Cable 1 * Manual (English)