Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
ET540 1.91 inch IP67 Waterproof Silicone Band Smart Watch, Support ECG / Non-invasive Blood Glucose Measurement, ET540 (Blue), ET540 (Red)1. Support ECG electrocardiogram function, Bluetooth call, non invasive blood sugar measurement, HRV function, AI medical diagnosis, METO function, body temperature monitoring, blood oxygen monitoring, breathing training, stress monitoring, NFC function, womens health (period tracking), heart rate monitoring , blood pressure monitoring, sleep monitoring, sedentary reminder and other health functions. Step calorie distance, multi sport mode, music
1. Support ECG electrocardiogram function, Bluetooth call, non-invasive blood sugar measurement, HRV function, AI medical diagnosis, METO function, body temperature monitoring, blood oxygen monitoring, breathing training, stress monitoring, NFC function, womens health (period tracking), heart rate monitoring , blood pressure monitoring, sleep monitoring, sedentary reminder and other health functions. Step/calorie/distance, multi-sport mode, music control.2. Screen size: 1.91 inches, high resolution 320x386 screen
3. Screen type: IPS HD TFT
4. Main control chip: ultra-low power consumption 7013A
5. Body temperature sensor: contact body temperature sensor
6. Blood oxygen: infrared light + red light True blood oxygen, gravity sensor: Rohm KXTJ3-1057
7. ECG chip: VP555ER, photoelectric chip: dual PD-VP555ER
8. Vibration: mute/vibrate
9. Waterproof level: IP67
10. Compatible system: Android 4.4 and above, iOS 8.2 and above
11. Bluetooth: 5.0BLE
12. Battery capacity: 260mAh
13. Charging method: Magnetic charging
14. Charging time: about 3-4H
15. Battery life: 3-5 days in use, 20+ days in standby
16. Control method: full-screen touch control, mobile phone APP control
17. Language:
- 13 languages on the watch side: Chinese, English, Japanese, Russian, German, Spanish, Italian, French, Portuguese, Korean, Polish, Czech, Traditional Chinese.
- APP language: Russian, Hungarian, Turkish, German, Italian, Czech, Slovak, Japanese, French, Polish, Persian, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Vietnamese, Arabic, Korean.
18. Other functions: stopwatch, flashlight, countdown, step counting, calories, distance, sleep monitoring, exercise mode, call reminder, alarm clock reminder, raising hand to brighten the screen, social sharing (WeChat, QQ, Facebook, Twitter), etc., shaking Photograph.
19. Material:
- Shell: metal alloy + stainless steel
- Bottom shell: PC+ABS+medical 316 steel sheet
- Strap: Eco-friendly silicone
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
4.8 ★★★★★
Based on 2409 reviews
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Product Reviews
★★★★★ 5
Nice Fit
Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification.
Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
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Reviewed in the United States on April 8, 2025
★★★★★ 5
👍🏻
Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through).
There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
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Reviewed in the United States on April 14, 2026
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