Product Name: Fetal Doppler with Clear and Loud Sound, 8m for Vascular Doppler Model NO.: BF-560 Battery: White Trademark: bestman Specification: CE, ISO Origin: China Product Description Features: White backlight LCD display, can be used at all kinds of ray; High sensitive transducer, Low ultrasonic power, safe for fetus; Friendly man-machine interface, easy to use; Output function, the machine can connect to instruments which comply with IEC60601-1, can amplify and record the sound; High-quality loudspeaker make the sound much clearer. Specifications: Executive Standard: EN61266: 1995Ultrasonic frequency: 2.0 MHz(Standard) 3.0MHz/5.0MHz/8.0MHz(Optional), error: ± 10%Ultrasonic power intensity: ≤ 10mW/cm2Comprehensive Sensitivity: ≥ 90dBMeasurement range: 50bpm210 bpm Error: ± 2bpmIsptp: ≤ 0.1MpaDoppler Frequency: 0-3kHzPower Consumption: ≤ 1.5WPower off automatically: After 3 minutesWorking Mode: Continuous ultrasound dopplerWorking temperature: 5-40º CHumidity: < 80%Atmospheric pressure: 86-106kPaPackaging collocation: Dimension: 35(Depth)*90(Width)*130(Height)mmNet Weight: 0.5Kg(battery included)Power Supply: Size 5 alkalescence battery(1.5V *3) (alkalescence battery isn'tRechargeable)Display: 40*23 mm LCD display battery power, FHR and frequency of probeNormative collocation: Main Unit, 2.0MHz Probe, 3.0pieces of 1.5V size 5 alkaline battery, gallus, service manual, maintenance manual and certificate. Optional collocation: 3.0MHz/5.0MHz/8.0MHz probe, size 5 Ni-MH rechargeable battery( 1.2V * 3), charger, earphone, mini small sound box, ultrasound gel.