ESTG KC91 Smart Watch: 530 mAh battery
Let me tell you about the KC91 Smart Watch — because, honestly, it’s like having a tiny, hyper-competent assistant strapped to your wrist. This thing doesn’t just tell time; it’s got a 530 mAh battery that laughs in the face of your all-day binge-watching sessions (okay, maybe not, but it lasts impressively long). Need light? Boom, LED flashlight. Lost in the woods? The built-in compass and altitude measurement have your back. And for those who geek out over weather patterns, the atmospheric pressure sensor is like having your own mini meteorologist. Oh, and it lets you take calls via Bluetooth, because apparently, we’re living in the future. Plus, it’s got a fitness tracker to guilt-trip you into moving more. Whether you’re scaling mountains or just scaling your inbox, the KC91 is the overachiever of smartwatches.
- LED flashlight
- Compass
- Altitude measurement
- Atmospheric pressure sensor
- Bluetooth calling
- Fitness tracker
- 530 mAh battery
General specs
- Brand: ESTG
- Model: KC91
- Seller: Joom
- Battery Capacity: 530 mAh
- Features: LED flashlight, Compass, Altitude measurement, Atmospheric pressure sensor, Bluetooth calling, Fitness tracker
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
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$47.64
Last price update: 8/7/25
Available to order
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Delivery to 
United States
United States
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Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
ESTG KC91 Black 530 mAh battery
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ESTG AK72 Black Amoled display
|
ESTG CF32 Black Bluetooth calling
|
ESTG K57 Pro 1.96-inch display
|
ESTG K67 1.43 AMOLED display
|
ESTG K69 1.75-inch Amoled screen
|
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| Brand | ESTG | ESTG | ESTG | ESTG | ESTG | ESTG |
| Model | KC91 | AK72 | CF32 | K57 Pro | K67 | K69 |
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| Rating |
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| Price | $47.64 | $44.80 | $37.51 | $44.00 | $59.11 | $51.89 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 14, 2025 | August 8, 2025 | August 8, 2025 | August 8, 2025 | August 8, 2025 | August 8, 2025 |
| Features | LED flashlight, Compass, Altitude measurement, Atmospheric pressure sensor, Bluetooth calling, Fitness tracker | Voice assistant, Health monitoring, Fitness tracker, Sport tracker | Flashlight, Compass, Barometric altimeter, GPS | Bluetooth calling, LED flashlight, Health monitoring, Fitness tracking | ||
| Display | Amoled | 1.43 AMOLED | 1.75-inch Amoled | |||
| Connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth | ||
Smart Watch
$47.64
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