Introduction
This manual provides essential information for the proper use, installation, and maintenance of your NineHorse replacement bands for the Letsfit IW1 Lite smartwatch. These bands are designed to offer a comfortable and durable alternative to your original watch strap.

Figure 1: Assortment of NineHorse Smart Watch Bands.
Compatible Models
These replacement bands are specifically designed for the following smartwatches:
- Letsfit IW1 Lite Smartwatch
Note: These bands are not compatible with Letsfit IW1 or IW2 models. They are also compatible with Amazfit Active 2 1, GTR Mini, and GTS 4 3 2 2e watch bands.
Product Features
- High-Performance Silicone Material: Made from environmentally friendly silicone, ensuring durability, flexibility, and comfort. The material is waterproof, sweat-resistant, and resistant to fading or tearing.
- Adjustable Size: Designed to fit most adult wrists, suitable for wrist sizes ranging from 5.5 inches to 7.8 inches. The adjustable buckle allows for a secure and customized fit.
- Quick Release Design: Features quick-release pins for easy installation and removal without the need for additional tools.
- Variety of Colors: Available in multiple fashionable patterns and colors to suit various preferences and occasions.
Setup and Installation
Installing your new NineHorse watch band is a straightforward process due to its quick-release mechanism.
- Remove Existing Band: Locate the quick-release pins on the underside of your current watch band where it connects to the watch face. Slide the pin lever to detach the band from the watch. Repeat for both sides.
- Prepare New Band: Take one half of your new NineHorse band. Identify the quick-release pin integrated into the band.
- Attach New Band: Insert one end of the quick-release pin into the corresponding lug hole on the watch face. While holding that end in place, slide the pin lever to retract the other end of the pin. Align the retracted end with the opposite lug hole and release the lever. The pin should snap securely into place. Gently tug on the band to ensure it is firmly attached.
- Repeat for Second Half: Follow the same steps to attach the second half of the watch band to the other side of your smartwatch.

Figure 2: View of the quick-release pin attachment point on the watch back.

Figure 3: Individual components of the watch band, highlighting the quick-release pins.
Operating and Wearing
Once installed, adjust the band for a comfortable and secure fit on your wrist.
- Adjusting Size: Use the aluminum buckle to select the appropriate hole on the strap that provides a snug yet comfortable fit. Ensure the watch is not too tight to restrict circulation, nor too loose to move freely on your wrist.
- Proper Wear: For optimal performance of your smartwatch's sensors (e.g., heart rate monitoring), ensure the watch is worn securely on your wrist, typically one finger-width above your wrist bone.

Figure 4: Example of the watch band worn on a wrist.
Maintenance and Care
To ensure the longevity and appearance of your silicone watch bands, follow these care instructions:
- Cleaning: Regularly clean the band with a soft, damp cloth. For stubborn dirt, a mild soap solution can be used. Rinse thoroughly with clean water and dry completely before reattaching to your watch.
- Avoid Harsh Chemicals: Do not expose the bands to strong chemicals, solvents, or abrasive cleaners, as these can damage the silicone material.
- Storage: When not in use, store the bands in a cool, dry place away from direct sunlight to prevent discoloration or degradation of the material.
- Water Exposure: While the bands are waterproof, prolonged exposure to saltwater or chlorinated water should be followed by rinsing with fresh water to prevent residue buildup.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Band feels too loose or too tight. | Incorrect hole selection on the strap. | Adjust the buckle to a different hole to achieve a comfortable and secure fit. Ensure your wrist size is within the 5.5-7.8 inch range. |
| Band detaches from the watch. | Quick-release pin not fully engaged or improperly installed. | Ensure both ends of the quick-release pin are securely seated in the watch lugs. Gently tug on the band after installation to confirm it is locked in place. Refer to the "Setup and Installation" section. |
| Band appears dirty or discolored. | Accumulation of sweat, dirt, or exposure to certain substances. | Clean the band as described in the "Maintenance and Care" section. Avoid prolonged exposure to direct sunlight or harsh chemicals. |
Specifications
| Attribute | Detail |
|---|---|
| Material | Environment Protection Silicone |
| Clasp Type | Tang Buckle (Aluminum) |
| Adjustable Wrist Size | 5.5 inches - 7.8 inches |
| Package Dimensions | 7.87 x 5.75 x 1.1 inches |
| Item Weight | 0.63 ounces |
Warranty and Support
For information regarding warranty coverage or product support, please refer to the original purchase documentation or contact your retailer. Specific warranty details are not provided within this manual.