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Description
4-in-1 Portable PH/TDS/EC/TEMP Test Pen Multi-Function Water Quality Tester, 4-in-1 Test Pen1. Measuring range: PH: 0. 00 16. 00ph; TDS: 0 19990ppm; EC: 0 19990s cm 2. Resolution: 0. 01 ph; 1ppm; 1s cm; 0. 1 degree C; 0. 1 degree F 3. Accuracy: PH: + 0. 01 ph; TDS EC: + 2%; temperature: 0. 5 degree C 4. Battery: 3x1. 5V LR44 button battery (not included in delivery) 5. Temperature: 0. 1 60. 0 degrees Celsius; 32. 0 140. 0 degrees Fahrenheit 6. Calibration: PH: Three point automatic calibration (6. 86&4. 00&9. 18ph); TDS: 1413s cm; EC: 1413s
1. Measuring range: PH: 0.00-16.00ph; TDS: 0-19990ppm; EC: 0-19990μs/cm
2. Resolution: 0.01 ph; 1ppm; 1μs/cm; 0.1 degree C; 0.1 degree F
3. Accuracy: PH: +/-0.01 ph; TDS/EC: +/-2%; temperature: 0.5 degree C
4. Battery: 3x1.5V LR44 button battery (not included in delivery)
5. Temperature: 0.1-60.0 degrees Celsius; 32.0-140.0 degrees Fahrenheit
6. Calibration:PH: Three-point automatic calibration (6.86&4.00&9.18ph); TDS: 1413μs/cm; EC: 1413μs/cm
7. Automatic shutdown: 5 minutes
8. Battery: 3x1.5LR44 button battery (not included in delivery)
9. Dimensions: 18.5x3.7x2.4 cm
10. Weight: 90 grams
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
4.5 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 2
Watch band
Color: Green
The watch looks great. Keeps n good time. However band is already breaking. I got this morning my elderly mom. Seriously sick of cheap products
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Reviewed in the United States on May 4, 2026
★★★★★ 3
Band will not hold up
Color: Blue
Watch is cute and works well, but the band did not last long ,ended up buying a leather band
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Reviewed in the United States on April 2, 2026
★★★★★ 5
great watch
Color: Purple
this is the cutest watch and keeps great time!!!. I love the face, it makes me smile every time I look at it. great value
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Reviewed in the United States on April 21, 2026
★★★★★ 1
Bad quality. Stopped working within a month.
Color: Blue
This watch stopped working the day after Amazon accepts returns. I had only worn it twice. I had another similar watch which worked fine. I don't see any warranties from the manufacturer for this item. So a waste of money. Also for the 30 day return - I received this on January 11, it is February 11 - I should be able to return for refund.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Must wind the time adjustment knob in for it to work!
Its a gorgeous watch and I love the clasp design and band material. It works if you: 1. wind the time adjustment knob with the knob IN/towards the watch 2. pull out the time adjustment knob and wind the side button to change the time or 3. shake it hard- it starts and stays moving easily after that if you are walking/swinging your hand around. I dont know how long each wind/twist lasts but winding it (knob in) will keep it moving even if its just sitting. Options 2 or 3 only keep it moving temporarily. The band and clasp are really smooth and comfortable. The watch itself isnt too thick and the band is extremely easy to adjust to a custom fit (screwdriver and instructions included for adjusting the clasp location). Its really comfortable for an all day wear, is subtle for everyday wear but classy when looked at up close. For under $35 this is a gorgeous, simple watch and significantly cheaper than most of the others I've looked at. Havent tested under water yet though
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Reviewed in the United States on October 8, 2025
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