1. Product Overview
The eppfun Sleep Earbuds LS003 are designed for comfort and passive noise blocking, ideal for sleep and relaxation. These compact, wireless earbuds feature an ergonomic design for side sleepers and come with a portable charging case.

Image 1.1: eppfun Sleep Earbuds LS003 in their open charging case, showing both earbuds nestled inside.
2. Package Contents
Please verify that all items are present in the package:
- eppfun Sleep Earbuds (Left and Right)
- Charging Case
- Ear Cushions (various sizes)
- USB Charging Cable
- User Manual (this document)
3. Product Features
- Compact Design: Sleek, egg-shaped charging case for portability.
- Sleep-Friendly: Ergonomic, in-ear design for comfortable wear, especially for side sleepers.
- Wireless Connectivity: Bluetooth 5.3 for seamless pairing.
- Long Battery Life: Up to 4.5 hours playtime per charge, with additional charges from the case.
- Passive Noise Blocking: Designed for sound isolation, reducing ambient noise by up to -28dB.
- No Button Design: Operations like volume control and call answering are managed via the connected mobile device.

Image 3.1: A woman sleeping on her side, demonstrating the comfortable fit of the eppfun Sleep Earbuds.

Image 3.2: Graphic illustrating the -28dB noise reduction capability of the earbuds through dual physical noise cancellation.
4. Setup
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case.
- Place the earbuds into the charging case, ensuring they are correctly seated.
- Connect the charging case to a USB power source using the provided USB cable.
- The indicator lights on the case will show the charging status. A full charge typically takes about 1 hour.
- Once fully charged, disconnect the charging cable.
The earbuds provide approximately 4.5 hours of playtime on a single charge. The charging case holds multiple additional charges.
4.2 Bluetooth Pairing
- Ensure the earbuds are charged.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet), go to the Bluetooth settings.
- Search for available devices and select "eppfun LS003" (or similar name) from the list.
- Once connected, you will hear an audio prompt, and the earbuds will be ready for use.
Note: The earbuds will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.
5. Operating Instructions
5.1 Wearing the Earbuds
The eppfun Sleep Earbuds are designed for a secure and comfortable fit, especially for side sleepers. Choose the ear cushions that best fit your ear canal for optimal comfort and noise isolation.
- Gently insert each earbud into the corresponding ear (L for left, R for right).
- Rotate the earbud slightly until it feels snug and comfortable, with the wing tip resting securely in your ear's concha.
- Ensure a good seal for effective passive noise blocking.

Image 5.1: Close-up view of the eppfun Sleep Earbuds, highlighting their ergonomic shape.
5.2 Basic Functions (via Connected Device)
Due to their compact, button-less design, all controls for media playback, volume adjustment, and call management are performed directly on your connected smartphone or tablet.
- Play/Pause: Use your device's media controls.
- Volume Up/Down: Adjust via your device's volume buttons or on-screen controls.
- Next/Previous Track: Control through your device's media player.
- Answer/End Call: Manage calls directly from your phone.
- Activate Voice Assistant: Use your device's voice assistant activation method.
6. Maintenance
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Ear Cushions: Remove and clean ear cushions with mild soap and water if necessary. Ensure they are completely dry before reattaching.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Water Resistance: The earbuds are water resistant, but not waterproof. Avoid submerging them in water or exposing them to excessive moisture.
7. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Earbuds not pairing |
|
| No sound or low volume |
|
| Earbuds not charging |
|
| Uncomfortable fit |
|
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | LS003 |
| Connectivity Technology | Bluetooth |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Noise Control | Sound Isolation (up to -28dB) |
| Battery Life (Earbuds) | 4.5 Hours |
| Charging Time | 1 Hour |
| Ear Placement | In Ear |
| Form Factor | In Ear |
| Earpiece Shape | Ergonomic |
| Material | Plastic |
| Item Weight | 90 Grams (total, including case) / 3.17 ounces |
| Water Resistance Level | Water Resistant |
| Included Components | Charging Case, Ear Cushions |
9. Warranty and Support
eppfun products are covered by a manufacturer's warranty. For detailed warranty information, technical support, or customer service inquiries, please refer to the official eppfun website or contact their customer support directly. Keep your purchase receipt for warranty claims.
You can visit the eppfun store on Amazon for more information: eppfun Amazon Store