ET540 Smart Watch with ECG and Non-invasive Blood Glucose Measurement: ECG electrocardiogram function
Meet the ET540 Smart Watch—your new sidekick for staying healthy, active, and in the loop. It's not just a watch; it's like having a mini doctor and personal trainer strapped to your wrist. The 1.91-inch IPS HD TFT screen is so crisp, you'll forget you're not staring at your phone. And when it comes to health features, this thing is packed: think ECG, blood glucose checks without the ouch, HRV, AI that's smarter than your average doc, METO, body temp, blood oxygen levels... the list goes on. Oh, and it's got your back with multi-sport modes, music control (because what's a workout without tunes?), and NFC for those tap-and-go moments.
Built to last, the ET540 sports a metal alloy + stainless steel shell that can take a beating, paired with an eco-friendly silicone strap that's kind to your skin and the planet. With an IP67 waterproof rating, it laughs in the face of rain, sweat, and the occasional coffee spill. Plus, it plays nice with Android 4.4+ and iOS 8.2+, so almost everyone can join the party.
- Non-invasive blood sugar measurement
- Bluetooth call
- HRV function
- AI medical diagnosis
- ECG electrocardiogram function
General specs
- Model: ET540
- Seller: Sunsky
- Screen size: 1.91 inches
- Screen type: IPS HD TFT
- Waterproof level: IP67
- Battery capacity: 260mAh
- Charging method: Magnetic charging
- Compatible systems: Android 4.4 and above, iOS 8.2 and above
- First listed by seller: 6/22/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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| Brand | Explorer Outdoors | SACOSDING | SCIONE | SACOSDING | ||
| Model | ET540 | S25 | Smart Watch | |||
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| Price | $27.62 | $143.38 | $129.41 | $142.89 | $174.70 | $33.82 |
| Seller | Sunsky | Joom | Banggood | Joom | Joom | Joom |
| Update | June 21, 2025 | August 23, 2025 | August 23, 2025 | August 23, 2025 | August 13, 2025 | August 17, 2025 |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | |||
