User-Friendly Design

• Compact design with easy one-hand operation
• Bright OLED screen with real-time FHR display

Interchangeable Waterproof Probe 

• 2 MHz probe with deep penetration for later pregnancy and larger patients
• 3 MHz probe detects fetal heart beat as early as 9 weeks
• 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