Specifications:
Brand Name: YONKER
Model Number: YK-90B
Material: Plastic
Color: Blue Pink Purple Green
Display: FHR
Ultrasonic operating frequency: 2.5MHz
Measurement precision: Error not more than 2 times/min
FHR Measurement Range: 50-240bpm
Accuracy: ±2bpm
Ultrasonic output power: < 40mW
Operating mode: continuous wave
Integrated sensitivity: At the place 200mm away from the surface of probe: >90dB
Size: 3.78*1.11*5.04 in
Weight: 135.5g (including battery).























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