Product Name: Water Proof Probe, Curve and Number Display Fetal Heart Rate, Alarm Model NO.: BD-500D+TFT Type: Patient/Fetal/Maternal Monitor Classification: Biochemical Apparatus Feature: Double Interface Product Description CE Mark Portable Fetal Doppler BF-500D+ TFTFeatures: Pocket Fetal Doppler mainly applies to detect the fetal heartbeat rate from the twelfth week; LCD can display FHR, synchronous FHR signal, battery indicator, volume of sound and alarm indicator accurately; Built-in rechargeable battery can work continuously more than 5 hours; TFT LCD display for use conveniently at night; 4 modes count the FHR: Average, Auto, Manual and InstantAutomatic power off ( one minute), self-detect function, and alarm function when FHR is out of the normal range or battery power is in shortage; only 270g, can be carried conveniently with a gallus; Built-in speaker and collocated with earphone jack; 2.0MHz probe. Specifications: Executive Standard: EN61266: 1995Ultrasonic frequency: 2.0MHz± 10%Ultrasonic intensity: ≤ 10mW/cm2Comprehensive Sensitivity: ≥ 90dBFHR range: 60--210bpm(± 2bpm)FHR alarm range: ≤ 100bpm or ≥ 160bpmIsptp: ≤ 0.1MPaBattery: 9V dry battery (optional for 9VNi-MH rechargeable batteries and charger)Maximum audio output intensity: ≤ 1WDoppler frequency: 100--3000HzStatic continuous working time: ≥ 2hAutomatic Dormancy time limit: 1 minuteHumidity: ≤ 80%Atmospheric pressure: 86--106kPaPackaging collocation: Single Unit Dimension: 24cm X 23cm X 12cm Gross Weight: 1.5kg20 PCS/carton Dimension: 44cm X 36cm X 42cm Gross Weight: 18kgNormative collocation: Gallus, operation manual, approval certification, warranty card