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1
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Large fonts digital display
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1
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Working Frequency: 3.0 MHz,2.5MHz or 2.0MHz ; Standard frequency & average frequency Deviation:≦ ±10%
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2
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Instantaneous FHR real-time display
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2
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Ultrasound Intensity: <5mW/cm2
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3
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Using DSP Tech, more advanced & accurate
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3
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FHR Measurement & Display Range: ≧ 40bpm/ min ---210bpm/ min
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4
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Automatic shutdown after a set time
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4
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FHR Accuracy: < ±10%
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5
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High-quality high-power output,Loud & clear sound
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5
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Power: 3.7V Li-battery
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6
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FHR overrun alarm
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6
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Continuous working time: Rechargeable Battery > 4 hours
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7
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Compatible with rechargeable batteries .
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7
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Working Temperature: 5℃—40℃
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8
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Relative Humidity: 30%—80%
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9
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Atmospheric Pressure: 70kPa—106kPa
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10
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overall sensitivity : >100dB
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