1. The frequency, power indicator, and signal strength bar are clearly and intuitively displayed on the LED screen.2. Built-in dual antennas, resistant to WiFi, electromagnetic and other interference, with the characteristics of anti-interference and longer transmission distance (30m).3. 24-bit/48kpbs high resolution, Mic/Line modes available for switching.4. The received signal is strong, stable and fast.5. Small wireless system with built-in lithium battery, plug and play, easy to operate.6. Supports dynamic microphones and condenser microphones with built-in power supply.7. Equipped with XLR female to 6.35mm male microphone adapter, compatible with mixers, recorders, speakers, PA systems, amplifiers, etc. Provide stable and reliable wireless transmission.Specification:1. Material: ABS2. Number of channels: 63. Transmission distance: about 30 meters4. Duration: stable for 5 hours5. Power supply: built-in rechargeable lithium battery6. Delay: about 5ms7. Sound dynamics: 110dB8. Sampling rate: 24bit / 48 kpbs audio9. Frequency response: 20Hz-20kHz10. Antenna impedance: 50Ω11. Signal-to-noise ratio: 110dB12. Battery: 3.7V 400mAh lithium-ion battery13. Supported microphone types: dynamic microphone and built-in power condenser microphone14. Product dimensions: 70 x 30 x 30 mm15. Weight: 200 gSpecification: Package Weight One Package Weight 0.40kgs / 0.87lb One Package Size 17cm * 14cm * 6cm / 6.69inch * 5.51inch * 2.36inch Qty per Carton 20 Carton Weight 8.00kgs / 17.64lb Carton Size 35cm * 29cm * 30cm / 13.78inch * 11.42inch * 11.81inch Loading Container 20GP: 875 cartons * 20 pcs = 17500 pcs40HQ: 2032 cartons * 20 pcs = 40640 pcs