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User-Friendly Design
- Compact design with easy one-hand operation
- Bright OLED screen with real-time FHR display
- Hi-Fi speaker
Interchangeable Waterproof Probe
- Plug-and-play
- 2 MHz probe with deep penetration for later pregnancy and larger patients
- 3 MHz probe detects fetal heart beat as early as 9 weeks
- 4/5/8 MHz probe for blood flow detection
- Automatic power-off while putting the probe back to the rack (SD3 PLUS & SD3 PRO)
Work Mode
- Real-time work mode for spot check
- Record & play with audio playback and numeric display
Power Source
- Standard AA batteries for easy replacements
- Built-in Li-ion rechargeable battery ensures long working time
- Unique charger stand and wall mount design