Wireless Microphone System Receiver with Handheld Mic UHF Anti-Howling Digital Display Screen for Home Cinemas Karaoke Church Speech Wedding Party Singing Rechargeable Wireless Microphone Handheld Microphone Pickup: Dynamic coil head Directionality: Unidirectional Transmission Power: Less than 10mW Dynamic Range: andge 90dB Frequency Response: 70Hz-18kHz Frequency Range: Channel A (663MHz-678MHz) and Channel B (679MHz-694MHz) Launch Distance: About 25m or 82ft (open area) Gain Adjustment: 0dB to 20dB Battery Type: Lithium ion battery Battery Capacity: 3.7V or 1200mAh Charging Method: Type-C charging Charging Time: About 2 hours (5V or 1A) Usage Time: About 8 hours Receiver Audio Output: 6.35mm line output Battery Type: Lithium ion battery Battery Capacity: 3.7V or 1200mAh Charging Method: Type-C charging Product Style: 1 Receiver with 1 Microphone, 1 Receiver with 2 Microphones (optional) Microphone Size: 24.5 x 5 x 5cm or 9.6 x 2 x 2inch Receiver Size: 11.5 x 3.2 x 2.5cm or 4.5 x 1.3 x 1.1inch Microphone Weight: 359g or 12.7oz Receiver Weight: 63g or 2.2oz