Ulanzi J12 Wireless Lavalier Microphone for iPhone

Features: -, Automatic connection when plug receiver in, no app needed. -, 2.4Ghz Wireless Bluetooth Microphone, max 20 meters working distance -,  800mAh Battery Hub, 6H super long working time -,  Two transmitters with 80mAh built in batteries. -,  Three steps noise reduction -,  CE, FCC, RoHs certificate. 1, Microphone Transducer: Omnidirectional Capacitor 2, Interface: Lighting ( Compatible with iPhone) 3, Transmission distance: 10m - 20m 4, Sound delay: ≤25ms 5, Working time:  No less than 6H 6,  Noise Reduction: 3 Steps 7, Signal to nosie ratio: ≥ 70db 8, Senstivity(dBV): -38db ± 3db 9, Frequency: 20--20KHZ 10, Battery Capacity:  Battery Hub 800mAh;  Transmitter Battery 80mAh 11, Headphone monitoring: Support 12, Working Current: 11 - 12mA 13, Output: 5V / 1A 14, Packing List: Mic transmitter *2, Receiver *1, Charging Hub *1, Charge Cord *1 15, Product Weight: 69g 16, Material: ABS Plastic 17, Color: Black