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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
DUOYI DY28 Car Double Hole Spark Plug Tester, US Plug, DUOYI US Plug1. It has two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment. 2. Adjustable double hole car spark plug tester detector Ignition Plug Analyzer Diagnostic Tool 3. Usage: Test spark plug performance and ignition strength 4. Application Range: 12V Gasoline vehicles car spark plugs 5. Car Spark Plug Tester User Manual: (1). Place the Spark
1. It has two testing holes, you can test two spark plugs meanwhile and and if you suspect any spark plug works improperly you could compare and test to make accurate judgment.2. Adjustable double hole car spark plug tester detector Ignition Plug Analyzer Diagnostic Tool
3. Usage: Test spark plug performance and ignition strength
4. Application Range: 12V Gasoline vehicles car spark plugs
5. Car Spark Plug Tester User Manual:
(1). Place the Spark Plug into tester hole 1 or 2; If you want to compare the new spark plug and old one, place new spark plug into hole 1 and the old on into hole 2
(2).Close up the protective cover , then plug in the adaptor to the side socket , connect the tester to power supply.
(3).Turn the key switch clockwise to turn on tester, indicator will light up green.
(4). Continue to turn the switch clockwise, you can adjust the working frequency between 1000rpm to 6000rpm/min, The higher the frequency is set, the stronger the spark more.
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
4.2 ★★★★★
Based on 1393 reviews
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Product Reviews
★★★★★ 5
Works great under makeup
Excellent for the face! Many sunscreens claim they are good for the face, and blend well. This one actually DOES!! It is also an excellent moisturizer under your makeup without streaking. Just a smooth, beautiful finish. I wear it all year around The sun is just as strong and quite capable of ruining your skin in the winter as well.
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Reviewed in the United States on May 4, 2026
★★★★★ 3
Not amazing, but not the worst.
I hate sunscreen and to varying degrees chemical or mineral sunscreens. This was promised as grease free and smooth, but it comes out watery and does feel greasy, but once applied on the skin it does feel smooth.
UPDATE: I got a suntan after slathering this on my face. I would say this lasts about an hour and a half. The suntan happened 15 minutes before the two hour "clock" was up. Disappointing. Back to mineral sunscreen.
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Best mineral sunscreen
Size: 3.4 Fl Oz (Pack of 1)
Best sunblock. No white cast if you use the 30 spf. My dermatologist recommended this years ago and I’ve used it since.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
No white residue
Size: 3.4 Fl Oz (Pack of 1)
I put this sunscreen on immediately after it was delivered. It smells so good & goes on smoothly without any white residue. It seems to protect the skin, but then again I put some on every hour on the hour and didn't have any issues. I will be reordering. I wish this was on subscribe and save, but will continue to purchase.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Best sunscreen ever
Size: 3.4 Fl Oz (Pack of 1)
I loooove this mineral sunscreen. It’s goes on so well, and works great. Definitely my favorite of all time!
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Reviewed in the United States on April 30, 2026