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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
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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:
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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
4.7 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 4
Denim like fabric with some padding
Size: 14 inch, Color: Bright Rose
Adequate for the job. I wanted something bright colored and padded to hold my laptop safely in my carryon.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Sleek, Durable Laptop Sleeve That Punches Above Its Price
Size: 13.3 inch, Color: Red
Right out of the box the sleeve felt premium—sleek exterior, soft interior lining, smooth zipper—and it’s held up flawlessly through daily use with no pilling or wear. My 13‑inch MacBook slides in snugly without adding bulk, and the padding gave me real confidence after I accidentally knocked the bag off a chair and the laptop came out unscathed. The front pocket fits my charger, hub, and other small accessories neatly, making it practical for coffee‑shop days, though I do wish it had a grab handle, but it is ok. For the price, this sleeve delivers excellent protection and finish that rivals much more expensive options.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Triple Check Your Measurements. No Margin For Error.
Size: 15 inch, Color: Space Gray
Exterior is exactly 15" wide making for a snug fit of my 14 1/8" laptop. This snug fit was what I was looking for. Any tighter and it wouldn't fit at all. The material is of good quality and the lining is soft. The padding is minimal but should be adequate for everyday use. First impressions are this is a very good quality sleeve. Time will tell.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
13.3-inch bag is too big for a 13-inch Surface Pro 11
Size: 13.3 inch, Color: Gray
The bag is very good, but I am returning the 13.3-inch size bag, as it is too big for a Microsoft Surface Pro 11 (13-inch screen). I should have done a bit more digging through the description to realize the size. It would have been better if the pictures showed actual inner dimensions. I have just ordered a 12.3-inch bag. The smaller bag should be adequate.
EDIT: The 12.3 inch bag came in. This bag is perfect for Surface Pro. Great fit! The front pocket holds the power brick and a small mouse, and a bit more space for flash drive or similar.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Nice color and good quality
Size: 14 inch, Color: Navy Blue, Size: 14 inch, Color: Navy Blue
I had originally bought this for my work laptop (MacBook) and it fit perfectly. But now I use it for my personal which is a 13.3in MacBook Air. I like the feeling of the case. I have a crack on my screen and I feel like this case offers more cushion than my previous one. I wouldn’t say this would save my laptop from a fall but I feel more confident as it’s in my bag that it’s getting enough protection. I also like the color and it’s spacious enough to hold a laptop charger, note pad, pens, etc.
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Reviewed in the United States on May 24, 2026