1. Shell: ABS+UV chip: Jerry 5.0.2. Frequency: 20 Hz~20 kHz3. Impedance: 164. Sensitivity: 108 ? 2dB5. Distance: 10-15 meters, usage time: 60 hour6. Standby time: 3 months.7. Polymer battery, long batter8. Packaging size: 197 * 160 * 30mm Weight: 103g
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