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SPECIFICATIONS: |
Size(W×H×D): 138 mm(L) x111 mm(W)x 34 mm(H) |
Weight: <500g |
Accuracy: ±2 bpm |
FHR range: 50~210 bpm |
Ultrasonic output power: <10mW |
Ultrasonic working frequency: 3.0MHz |
Overall sensitivity: ≥90dB |
Continuous working time: Consecutive 2 hours once it has full capacitance |
Degree of protection against ingress of liquid: IP22 |
Battery type: 3.7V 1500mAh lithium battery or 1.5V alkaline AA batteries |