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- USA
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
FNIRSI Noise Decibel Meter Home Volume Detector, Yellow1. Accuracy: 1. 5dB (based on standard sound source, 94dB@1KHz) 2. Frequency range: 31. 5Hz 8. 5KHz 3. Dynamic range: 3. 50dB 4. Measuring range: 30 130dB 5. Digital display: 4 digits, resolution 0. 1dB, sampling rate 2 times second 6. Dynamic scale display: 1 scale represents 2dB, sampling rate is 2 times second 7. Dynamic scale range: 30 130dB 8. Overload indication: "OVER" and "UNDER" symbols indicate 9. Dynamic characteristics: two reaction
1. Accuracy: 1.5dB (based on standard sound source, 94dB@1KHz)
2. Frequency range: 31.5Hz-8.5KHz
3. Dynamic range: 3.50dB
4. Measuring range: 30-130dB
5. Digital display: 4 digits, resolution 0.1dB, sampling rate 2 times/second
6. Dynamic scale display: 1 scale represents 2dB, sampling rate is 2 times/second
7. Dynamic scale range: 30-130dB
8. Overload indication: "OVER" and "UNDER" symbols indicate
9. Dynamic characteristics: two reaction speeds: FAST (fast) and SLOW (slow)
10. Microphone: 6mm condenser microphone
11. Battery: 600Mah/3.7V lithium battery
12. Dual mode switching, sensitivity adjustable
13. 0.6mm high-precision sensor, accurate capture, immediate response 6cm sound guide tube & silicone pad sound insulation and waterproof pad, enhanced performance
14. Built-in 600Mah lithium battery, Typc-C charging head interface
15. VA color screen, ultra-clear backlight, clear readings, with alarm indicator light
16. Prompt when the upper/lower limit is exceeded. The upper and lower alarm limits can be set separately.
17. Windshield design blocks all interference and is accurate.
18. Anti-slip silicone buttons, skin-friendly, rebound and comfortable to the touch
19. ABS shell, anti-fall and durable
20. Dimensions: 190x61x31mm
Specification:
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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
4.1 ★★★★★
Based on 226 reviews
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Product Reviews
★★★★★ 4
Really works
Really good. Works great. Noticed whiter teeth within a few uses.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
A Working Set Of Strips
This is not expensive. It does whiten your teeth. I don't see the 3d effect. You get some strips. 2 Types. This box will last you some time. If you want white teeth then this can help make it happen. This weirdly caused me pain the last few times I used them. Outside of this no issue with them. They come on and off no problem. I kinda recommend this. Just be careful.
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Reviewed in the United States on January 25, 2026
★★★★★ 5
Great value purchase
I wanted to get my teeth professionally whitened and have never done stripes before, but the professional whitening was quoted at $700 so I thought this would be a good start instead. I have done them a few times and the teeth get sensitive the next day but thats to be expected and no more than usual, then goes back to normal. I haven't done a ton but have noticed a difference already and plan to continue doing them!
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Reviewed in the United States on March 31, 2026
★★★★★ 5
My annual go to for sparkling whites before events
I have sensitive teeth and worn down enamel. These strips whiten without pain or additional sensitivity.
I use this once or twice a year before big events. It works great for that sparkling smile.
(Time only allowed for 10 days of whitening this time. The additional 3 days included in this pack would’ve resulted in even more dramatic effects)
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Reviewed in the United States on June 1, 2026
★★★★★ 3
They definitely whiten, but caused severe sensitivity
I have mixed feelings about these whitening strips. On the positive side, they absolutely do what they promise, my teeth are noticeably whiter, and the actual whitening results were fantastic.
However, they left my teeth painfully sensitive. I was very careful to follow the instructions exactly and made sure I only left them on for the strictly recommended amount of time, but I still experienced intense, lingering sensitivity afterward.
If you have a high tolerance or don't usually struggle with sensitive teeth, these might be a great fit for you since they really do work. But if you are prone to sensitivity at all, I would definitely proceed with caution!
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Reviewed in the United States on May 22, 2026