The YSL-505 ultrasound device allows you to listen to the fetal heartbeat from the 16th week of pregnancy. The heart rate is displayed in BPM on a digital screen with blue backlighting. The device is made of plastic and runs on 2 AA batteries, which are not included.

The detachable probe operates at 3.0MHz and is connected by a coiled cable approximately 1 m long. You can listen through the built-in speaker or headphones connected via the 3.5mm jack, and adjust the volume using the device buttons. Before use, apply ultrasound gel to the skin and move the probe slowly until a clear signal is detected. After use, clean the probe with a soft cloth and keep the device dry.

• Type: Portable fetal heartbeat listening device
• Display: Digital with blue backlighting
• Probe: Detachable
• Probe frequency: 3.0MHz
• Cable: Coiled, approximately 1 m long
• Audio: Built-in speaker and 3.5mm headphone jack
• Volume control: Volume adjustment buttons
• Fetal heart rate range: 110–160 BPM
• Power supply: 2 AA batteries, not included
• Material: Plastic
• Dimensions: 11 × 4 × 13.6 cm
• Weight: 0.152 kg
• Operating humidity: RH 0%–93%
• Operating atmospheric pressure: 50–106 kPa
• Storage temperature: −20 °C to +55 °C
• Certifications: CE, FCC, RoHS