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- USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
RZ-100S9 LED Fetal Doppler Ultrasound Sound Baby Heartbeat Detector Monitor Digital Prenatal Pocket Fetal Doppler Stethoscope, RZ-100S9Feature 1. Battery status indicator 2. Low power inspection of the battery 3. Built in speaker 4. The probe can be changeable 5. Probe inspection 6. Auto shut off 7. Can adjust the volume level Specification 1. Product Name: RZ 100S9 2. Safety: in accordance with IEC60601 1: EC60601 2, EC60601 3. 3. FHR measurement range: 50~240BPM (beats per minute) 4. Resolution: 1 BPM 5. Accuracy: + 1BPM 6. Power: 2 AA batteries (not included) 7. Size: 130x100x36mm
Feature1. Battery status indicator
2. Low power inspection of the battery
3. Built-in speaker
4. The probe can be changeable
5. Probe inspection
6. Auto shut off
7. Can adjust the volume level
Specification
1. Product Name: RZ-100S9
2. Safety: in accordance with IEC60601-1: EC60601-2, EC60601-3.
3. FHR measurement range: 50~240BPM (beats per minute)
4. Resolution: 1 BPM
5. Accuracy: +/- 1BPM
6. Power: 2 AA batteries (not included)
7. Size: 130x100x36mm
8. Weight: about 250g
9. Working temperature: 5~40 degree C
10. Working humidity: <80%
11. Storage temperature: -20~60 degree C
12. Storage humidity: <93%
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1222 reviews
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Product Reviews
★★★★★ 5
Perfect fit on 2008 Honda CRV LX
This KAX air filter was an excellent fit in a 2008 Honda CRV LX. The construction components of the filter (gasket, frame, and filter) are of good quality. I feel good putting this aftermarket filter in the car for the next 12k-15k miles. I took a picture of this filter next to the filter I replaced for frame/size comparison; it is an exact match. Additionally, the filter was wrapped in sealed plastic, boxed, and came with directions.
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Reviewed in the United States on January 27, 2024
★★★★★ 3
It's ok
Descent
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Game changer for my truck
Size: 1.9" x 9.9" x 11.4"
I installed this K&N Lifetime Cabin Air Filter in my 2016 F-150 and noticed the difference right away. The airflow is stronger, and the cabin smells fresher even when driving through dusty or humid areas. What I really like is that it’s washable and reusable—so I won’t have to keep buying filters every year.
Fitment was perfect and install took under 10 minutes. Just pop out the old one, slide this one in, and you’re good to go. It feels solid and well made, not like those cheap paper ones. It’s definitely worth the investment, especially if you drive a lot or have allergies.
Highly recommend for anyone with a Ford or Lincoln vehicle—it pays for itself quickly!
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Reviewed in the United States on July 3, 2025
★★★★★ 5
Fit 2024 F250 Platinum
Size: 1.9" x 9.9" x 11.4"
Good quality, perfect fit.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Great
Size: 1.9" x 9.9" x 11.4"
Great value for the money and easy to install.
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Reviewed in the United States on May 10, 2026