AV-SD 3 Ultrasonic Pocket Doppler is a compact and durable device designed for routine fetal heart rate detection with high sensitivity and full probe interchangeability. Its user-friendly design supports one-hand operation and features a bright OLED screen with real-time FHR display and Hi-Fi audio output, making it ideal for clinical use.

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

• Plug-and-play
• 2 MHz probe with deep penetration for later pregnancy and larger patients
• 3 MHz probe detects fetal heartbeat as early as 9 weeks
• Automatic power-off while putting the probe back to the rack (AV-SD-3-Pro)

• Real-time work mode for spot check
• Record & play with audio playback and numeric display

• Standard AA batteries for easy replacements
• Built-in Li-ion rechargeable battery ensures long working time
• Unique charger stand and wall mount design