4G Call Waterproof Smart Watch, 1.28 inch SL8521E Dual Core, 512MB+4GB, Multi-sport Modes, SOS | SKY-WearableMaster
$105.17
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Why You’ll Love It?
The SKY 4G SOS smart watch combines standalone Nano SIM calling with a rugged round case and a 1.28-inch capacitive touch screen.
First, users can dial contacts, receive text messages and access a one-key SOS function directly from the wrist. A built-in camera supports quick snapshots.
In addition, Bluetooth headset support enables audio and music playback. Running, swimming and basketball modes cover three everyday activity types.
Finally, 512MB RAM, 4GB storage, magnetic charging and a 600mAh battery support this connected watch in Black or White.
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WearableMaster'Opintion For Your Selection
WearableMaster'Opinion For Your Selection
-
Standalone 4G Nano SIM Calling - 94%
94%
-
One-Key SOS Access - 93%
93%
-
600mAh Battery Capacity - 92%
92%
-
512MB + 4GB Hardware - 91%
91%
-
Rugged Two-Color Design - 90%
90%
Best Uses and Buyer Fit
Use cases: standalone calling, family check-ins, emergency contact access, outdoor activity records and Bluetooth-headset music playback.
Best for: users who want wrist-based 4G communication and a prominent SOS function in a rugged round design.
Benefits: Nano SIM support reduces dependence on a nearby phone, while the 600mAh battery and 4GB storage support a broader connected feature set.
Ideal buyer profiles: active families, independent users, outdoor hobbyists and buyers prioritizing direct communication and quick-access safety tools.
Pros
- Standalone 4G calling with Nano SIM and address-book support
- One-key SOS function for quick help access
- 600mAh battery with 512MB RAM and 4GB storage
- Bluetooth-headset music support and built-in camera
Cons
- Cellular service depends on compatible local bands and a Nano SIM plan
- Actual battery duration varies with calling and network use
- The integrated battery is not designed for user removal
SKY 4G SOS Smart Watch Features
First, the watch supports a Nano SIM card for 4G calling, direct dialing, phone-book access and text messages. Supported cellular bands include GSM, WCDMA, LTE-FDD and LTE-TDD frequencies listed in the specifications.
A one-key SOS function provides quick access to help. The watch also lists offline payment support and a built-in camera for convenient wrist-based use.
Next, Bluetooth 2.1 lets users connect a compatible headset for audio and music playback. Running, swimming and basketball modes provide three activity options.
The full-circle 1.28-inch TFT display uses 240 × 240 resolution and capacitive touch operation. Inside, the Spreadtrum SL8521E chip works with 512MB RAM and 4GB storage.
In addition, the 600mAh high-capacity polymer battery uses magnetic charging. The battery is integrated and does not support user removal.
The case combines TPU and ABS, while the strap uses TPU. Therefore, the rugged structure suits active daily routines in either Black or White.
Finally, the package includes the watch, a magnetic charging cable, a card pin and multilingual instructions.
Q & A
4G Call Waterproof Smart Watch, 1.28 inch SL8521E Dual Core, 512MB+4GB, Multi-sport Modes, SOS | SKY-WearableMaster
| Detail Specs | SKY |
|---|---|
| Model | SKY |
| Chip | Spreadtrum SL8521E |
| RAM/ROM | 512MB+4G |
| Main screen | 1.28 inch TFT |
| Resolution | 240 x 240 |
| Touch screen | Capacitive touch |
| - GSM | 900/1800MHz |
| - WCDMA | 900/2100MHz |
| - LTE-FDD | B1/B3/B5/B7/B8 |
| - LTE-TDD | B38/B39/B40/B41 |
| Charging | Magnetic charging |
| Case | TPU+ABS |
| Strap | TPU |
| Bluetooth | 2.1 |
| SIM card | Nano SIM card |
| Battery specification | 600mAh high-capacity polymer |
| Battery removal | Not supported |
| One Package Weight | 0.24kgs / 0.53lb |
| One Package Size | 11cm * 11cm * 8cm / 4.33inch * 4.33inch * 3.15inch |
| Qty per Carton | 50 |
| Carton Weight | 11.50kgs / 25.35lb |
| Carton Size | 56cm * 24cm * 43cm / 22.05inch * 9.45inch * 16.93inch |
| Loading Container | 20GP: 461 cartons * 50 pcs = 23050 pcs 40HQ: 1071 cartons * 50 pcs = 53550 pcs |
Quick Comparison
| 4G Call Waterproof Smart Watch, 1.28 inch SL8521E Dual Core, 512MB+4GB, Multi-sport Modes, SOS | SKY-WearableMaster remove | ASUS TUF Gaming remove | HP Victus 16-e0174nw remove | Microsoft Surface Laptop Studio remove | Acer ProDesigner PE320QK remove | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | 4G Call Waterproof Smart Watch, 1.28 inch SL8521E Dual Core, 512MB+4GB, Multi-sport Modes, SOS | SKY-WearableMaster remove | ASUS TUF Gaming remove | HP Victus 16-e0174nw remove | Microsoft Surface Laptop Studio remove | Acer ProDesigner PE320QK remove | ||||||||||||||||
| Image |  |  | | | | ||||||||||||||||
| SKU | WMS-SKY | 30899 | 30898 | 30902 | 2144207 | ||||||||||||||||
| Rating | |||||||||||||||||||||
| Price | $105.17 | $1,640.00 | Original price was: $1,020.00.$918.00Current price is: $918.00. | $1,800.00 | $750.00 | ||||||||||||||||
| Stock | 29 in stock | 29 in stock | 29 in stock | 29 in stock | |||||||||||||||||
| Availability | 29 in stock | 29 in stock | 29 in stock | 29 in stock | |||||||||||||||||
| Add to cart | Select options This product has multiple variants. The options may be chosen on the product page | ||||||||||||||||||||
| Weight | N/A | N/A | N/A | N/A | N/A | ||||||||||||||||
| Dimensions | N/A | N/A | N/A | N/A | N/A | ||||||||||||||||
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FAQs
Q & A
4G Call Waterproof Smart Watch, 1.28 inch SL8521E Dual Core, 512MB+4GB, Multi-sport Modes, SOS | SKY-WearableMaster
