Fetal Heart Rate Monitor

Marsoni

M251S

$120.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Fetal Heart Rate MonitorBattery: Rechargeable lithium battery (3. 7V) Continuous use for 2 hours, more than 300 recharges Battery life: discharge Charging power supply: MICRO USB (DC5V; 1 60MA) Type of protection against electric shock: Class II equipment, internal power supply equipment Degree of protection against electric shock: BF type product IPX4 (ultrasound probe area), IPX1 (anti liquid penetration degree: The rest of the shell) has flammable gas Not suitable for

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Works really well. The pre filter captures so much dust you can really tell it's working as it should. The screen shows how dirty the air is and you can watch it go down as it cleans, didn't think we would need that but it's been surprisingly satisfying to see the quality visually. Very quiet on the lowest setting, easy to sleep with.. gives a nice white noise. The highest still isn't bad, the volume is similar to like a normal tower fan. Design is nice, it's a good looking machine. The only negative would be how bright the small display screen is at night but we just cover it if needed. Haven't tried the oil extract diffuser and probably won't. Works very well for cigarette smell! I'm sure if we had two it would completely remove the smoke smell. Overall would definitely buy again.

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Reviewed in the United States on May 28, 2026