Introduction
Welcome to the user manual for your Stiive Bluetooth Headphones. These wireless sports earbuds are designed for an immersive audio experience during your workouts, featuring Bluetooth 5.3 for stable connection, IPX7 waterproofing, and a long playtime. This manual provides detailed instructions to help you get the most out of your new headphones.

Image: Stiive Bluetooth Headphones, showcasing the earbuds and their compact carry case.
Setup
1. Charging the Headphones
Before first use, ensure the headphones are fully charged. Connect the provided Micro USB cable to the charging port on the headphones and the other end to a USB power source. A full charge takes approximately 2 hours and provides up to 16 hours of playtime.

Image: Visual representation of the headphone's battery life, indicating 2 hours of charging for up to 16 hours of playtime.
2. Pairing with Your Device
- Ensure the headphones are charged and powered on.
- Activate Bluetooth on your smartphone or audio device.
- Search for available Bluetooth devices. The headphones will appear as "Stiive U8I" or similar.
- Select the headphones from the list to pair. Once paired, the headphones will automatically connect to previously paired devices when powered on.

Image: Overview of key features including Bluetooth 5.3 connectivity, highlighting the stable and fast connection.
Operating Instructions
1. Basic Controls
The headphones feature intuitive controls for managing your audio and calls:
| Function | Action |
|---|---|
| Play/Pause | Press the Multi-function Button (MFB) once. |
| Answer Call | Press the MFB once during an incoming call. |
| Reject Call | Press and hold the MFB for 2 seconds during an incoming call. |
| End Call | Press the MFB once during a call. |
| Next Song | Press the "+" button once. |
| Previous Song | Press the "-" button once. |
| Volume Up | Press and hold the "+" button. |
| Volume Down | Press and hold the "-" button. |

Image: Detailed diagram illustrating the location and function of the control buttons on the headphones.
2. Audio Experience
Experience truly authentic sound and powerful bass with the dynamic drivers. The built-in noise-canceling microphone ensures clear voice capture, even in noisy environments, making calls clear during activities like driving, biking, or running.

Image: An exploded view highlighting the internal components responsible for the high-fidelity stereo sound.
Maintenance
1. Cleaning and Care
- Gently wipe the headphones with a soft, dry cloth after each use.
- Do not use abrasive cleaners or solvents.
- Regularly check and clean the eartips to prevent wax buildup, which can affect sound quality.
2. Storage
When not in use, store your headphones in the provided carry bag to protect them from dust, dirt, and physical damage. Avoid storing them in extreme temperatures.

Image: The compact carry bag for the headphones, demonstrating its portability and ease of storage.
3. Water Resistance
The Stiive headphones feature an IPX7 waterproof rating and interior nano-coating technology. This means they can effectively withstand sweat or light rain, making them suitable for workouts. However, they are not designed for submersion in water.

Image: Close-up of the headphones with water droplets, emphasizing their IPX7 waterproof capability.
Troubleshooting
If you encounter any issues with your Stiive Bluetooth Headphones, please refer to the following common problems and solutions:
- No Sound: Ensure the headphones are charged, paired correctly, and the volume on both the headphones and your device is turned up.
- Cannot Pair: Make sure the headphones are in pairing mode (usually indicated by a flashing LED). Turn off Bluetooth on other nearby devices that might be trying to connect. Restart both the headphones and your device.
- Intermittent Connection: Ensure you are within the Bluetooth range (10 meters/33 feet) of your device. Avoid obstacles that may interfere with the signal.
- Charging Issues: Use the original charging cable. Ensure the charging port is clean and free of debris. Try a different USB power source.
- Poor Call Quality: Ensure the microphone is not obstructed. Move to a quieter environment if there is excessive background noise.
Specifications
Detailed technical specifications for your Stiive Bluetooth Headphones:
| Feature | Detail |
|---|---|
| Model Name | U8I |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Water Resistance Level | IPX7 Water Resistant |
| Playtime | Up to 16 Hours |
| Charging Time | 2 Hours |
| Audio Driver Type | Dynamic Driver |
| Included Components | Bluetooth headphones, Carry bag, Eartips, Micro USB cable, Wire clip, User manual |
| Item Weight | 3.21 ounces |
| Product Dimensions | 1.4 x 0.57 x 0.58 inches |
Warranty and Support
Stiive products are designed for quality and durability. For information regarding warranty coverage, technical support, or any product-related inquiries, please refer to the contact information provided on the product packaging or visit the official Stiive website. Please retain your proof of purchase for warranty claims.





