1. Introduction
This manual provides essential information for the proper use, installation, and maintenance of your DigiKuber replacement strap for the EKG Smartwatch E66 Series. Please read this manual carefully to ensure optimal performance and longevity of your product.
2. Product Overview
The DigiKuber replacement strap is designed for compatibility with DigiKuber ECG Smartwatch models E66, E66BK, E66RD, and E66BL. It is crafted from durable, waterproof TPU silicone, ensuring comfort and resilience for daily wear and activity tracking.

Figure 2.1: DigiKuber Smartwatch Replacement Strap. This image displays the black silicone replacement strap with its buckle, ready for attachment to a compatible smartwatch.
Key Features:
- Material: High-quality, waterproof TPU silicone.
- Length: Approximately 25 cm (9.8 inches).
- Width: 18 mm.
- Compatibility: Specifically designed for DigiKuber ECG Smartwatch E66, E66BK, E66RD, E66BL.
3. Setup (Strap Installation)
To replace your smartwatch strap, follow these steps:
- Remove the Old Strap: Locate the quick-release pins on the underside of your existing strap where it connects to the watch body. Slide the pin lever inwards to detach one side of the strap. Repeat for the other side.
- Align the New Strap: Take one half of the new DigiKuber replacement strap. Align one end of the quick-release pin with the corresponding hole on the watch lug.
- Attach the Strap: While holding one end in place, slide the quick-release pin lever inwards and gently push the other end of the pin into the opposite hole on the watch lug. Release the lever to secure the strap. Tug gently to ensure it is firmly attached.
- Repeat for Second Half: Follow the same procedure for the second half of the strap.

Figure 3.1: Smartwatch with Replacement Strap. This image shows a DigiKuber smartwatch with the black replacement strap attached, illustrating how the strap integrates with the device.
4. Usage and Care
The DigiKuber replacement strap is designed for daily wear and various activities. To ensure its longevity and maintain hygiene:
- Wearing: Ensure the strap is worn comfortably, not too tight or too loose, to allow for proper blood circulation and accurate sensor readings from your smartwatch.
- Water Exposure: While the strap is waterproof, prolonged exposure to saltwater or chemicals (e.g., chlorine) should be followed by rinsing with fresh water and drying.
- Avoid Extreme Temperatures: Do not expose the strap to extreme heat or cold, as this may affect the material's integrity over time.
5. Maintenance
Regular cleaning of your strap will help prevent skin irritation and maintain its appearance:
- Daily Cleaning: Wipe the strap with a soft, damp cloth to remove sweat and dirt.
- Deep Cleaning: For a more thorough clean, use mild soap and water. Rinse thoroughly and allow the strap to air dry completely before reattaching it to your smartwatch.
- Avoid Harsh Chemicals: Do not use abrasive cleaners, solvents, or strong detergents, as these can damage the TPU silicone material.
6. Troubleshooting
If you encounter any issues with your replacement strap, consider the following:
- Strap Not Attaching Securely: Ensure the quick-release pins are fully engaged in the watch lugs. Check for any debris in the lug holes that might prevent proper seating.
- Discomfort or Skin Irritation: Ensure the strap is not too tight. Clean the strap regularly as per the maintenance section. If irritation persists, discontinue use and consult a healthcare professional.
- Damage to Strap: While durable, excessive force or sharp objects can damage the strap. Inspect for tears or cracks. If significantly damaged, replacement is recommended.
7. Specifications
| Attribute | Value |
|---|---|
| Product Material | Waterproof TPU Silicone |
| Strap Length | 25 cm (9.8 inches) |
| Strap Width | 18 mm |
| Compatible Models | DigiKuber ECG Smartwatch E66, E66BK, E66RD, E66BL |
| Package Dimensions | 11.9 x 6.8 x 1.6 cm (4.69 x 2.68 x 0.63 inches) |
| Product Weight | 10 grams (0.35 ounces) |
8. Warranty and Support
DigiKuber is committed to customer satisfaction. If you are not satisfied with your purchase, a full refund may be available. For any questions or concerns regarding your replacement strap, please do not hesitate to contact the seller directly through your purchase platform. Your satisfaction is our priority.