Features:
*Compact and portable,easy to use
*Display of ECG waveform, heart rate,SpO2 ,pulse rate ,pulse waveform
*Earphone output and 16 steps volume adjustable
*Alarm for SpO2 and pulse rate exceeding limits
*Real-time detecting, TF card data record and review
*Recorded data can be transferred to a PC
*PC analysis software
*Low power consumption
Specifications:
*Power Supply : ONE 3.7V Lithium Battery
*Display : 2.4" color LCD
*Dimension: 110mm (L) × 60mm (W) × 14mm (H)
*Stethoscope:electronic sensor ,three Stethoscope modes
    Heart:20~230Hz
    Lung:100~800Hz
    H&L:20~800Hz
*Heart Rate
    Measuring range: 30bpm~300bpm
    Accuracy: ±2 bpm or ±2%(select larger)
*SpO2
    Measuring range: 35%~100%
    Accuracy: 70%~100% ,±2% ;<70% unspecified
*Pulse Rate
    Measuring range: 30bpm~250bpm
    Accuracy: ±2 bpm or ±2%(select larger)
