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K/L (ISO 9141-2)
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J11 Wireless Lapel Microphone Portable Audio Video Recording Mini Mic Mounts K/L (ISO 9141-2)1. Microphone: digital silicon mark 2. Input voltage: 5V 3. Microphone battery: 60MAH 4. Charging compartment battery: 300MAH 5. Signal to noise ratio: 64DBM 3 step noise reduction 6. Transmission delay: 30MS 7. Sensitivity: 42DB 8. Frequency response range: 20 20KHZ 9. Transmission distance: barrier free 20m 30m Specification: Package Weight One Package Weight 0. 13kgs 0. 28lb One Package Size 12. 5cm * 8. 3cm * 3. 1cm 4. 92inch * 3. 27inch * 1.