1. Introduction
Thank you for choosing the otinsile M100 Open Ear Earbuds. This manual provides essential information for setting up, operating, and maintaining your new earbuds. Please read it thoroughly to ensure optimal performance and longevity of your device.

Figure 1: otinsile M100 Open Ear Earbuds in Rose Gold.
2. Package Contents
Ensure all items are present in your package:
- otinsile M100 Open Ear Earbuds (Left and Right)
- Charging Case with 1.3" HD Touchscreen
- USB-C Charging Cable
- User Manual

Figure 2: Contents of the otinsile M100 package.
3. Product Overview
The otinsile M100 earbuds offer a unique open-ear design combined with advanced features for an enhanced audio experience.
Key Features:
- 1.3" HD Touchscreen Charging Case: Control music, manage calls, activate camera, and access settings directly from the case.
- Open-Ear Design: Weighing only 4.1g per ear, these clip-on earbuds sit comfortably on your ear, allowing you to hear both your audio and surroundings.
- Enhanced Audio: 14.2mm dual-layer dynamic drivers deliver clear sound with deep bass.
- Environmental Noise Cancellation (ENC): Built-in microphones reduce 90% of background noise for clear calls.
- Bluetooth 6.0 Connectivity: Ensures a stable connection up to 10 meters (30 feet).
- Extended Battery Life: Up to 50 hours of total playtime with the charging case.
- IPX5 Water Resistance: Protected against sweat, light rain, and dust, suitable for sports and outdoor activities.

Figure 3: The M100 earbuds and their smart touchscreen charging case.
4. Setup
4.1 Charging the Case and Earbuds
Before first use, fully charge the charging case and earbuds.
- Connect the provided USB-C charging cable to the charging port on the bottom of the case.
- Connect the other end of the cable to a USB power adapter (not included).
- The touchscreen will display the charging status. A full charge takes approximately 2 hours.
- Place the earbuds into the charging case. They will begin charging automatically.

Figure 4: Charging the earbuds and case. The case provides up to 50 hours of total battery life.
4.2 Pairing the Earbuds
The earbuds will automatically enter pairing mode when removed from the case.
- Open the charging case. The earbuds will power on automatically.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for available Bluetooth devices and select "M100" from the list.
- Once connected, the earbuds will indicate successful pairing, and the case display will show connection status.
Video 1: Demonstration of how to pair the otinsile M100 Clip-On Earbuds with an interactive case to a mobile device.
4.3 Wearing the Earbuds
The M100 earbuds feature an ergonomic clip-on design for comfort and stability.
- Gently clip each earbud onto the thinner part of your ear.
- Adjust the earbud until the sound port points towards your ear canal for direct audio delivery.
- The adaptive C-bridge design with memory titanium wire flexes to your ear shape for a secure, custom fit.

Figure 5: Proper placement of the M100 earbuds on the ear.

Figure 6: The four-point secure fit design ensures stability during activity.
5. Operating Instructions
5.1 Touchscreen Controls (Charging Case)
The 1.3" HD touchscreen on the charging case provides intuitive control over various functions without needing your phone.
- Music Control: Play/pause, skip tracks, adjust volume.
- Call Management: Answer/end calls.
- Camera Control: Trigger your phone's camera remotely.
- Voice Assistant: Activate your device's voice assistant.
- Find My Earbuds: Locate misplaced earbuds by making them ring.
- Settings: Adjust screen brightness, set timers, change equalizer modes, select language, and customize wallpaper.
Video 2: Detailed demonstration of the interactive touchscreen features on the charging case.
5.2 Earbud Touch Controls
The earbuds also feature touch controls for quick adjustments.

Figure 7: Earbud touch control functions.
- Single Tap (L/R button): Volume down/up.
- Double Tap (L/R button): Play/Pause music.
- Triple Tap (L/R button): Previous/Next track.
- Double Tap (L/R button): Answer call.
- Press and Hold (L/R button for 2s): Answer call.
- Five Taps (L/R button after disconnecting Bluetooth): Reset to factory settings.
5.3 Find My Earbuds
If you misplace your earbuds, use the "Find My Earphone" feature on the charging case touchscreen to make them ring.

Figure 8: Using the "Find My Earbuds" function.
6. Maintenance
6.1 Cleaning
Regular cleaning helps maintain performance and hygiene.
- Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, solvents, or aerosol sprays.
- Keep charging contacts clean and free of debris.
6.2 Water Resistance (IPX5)
The M100 earbuds are IPX5 water-resistant, meaning they are protected against low-pressure water jets from any direction. This makes them suitable for workouts and light rain.
- Do not submerge the earbuds or charging case in water.
- Avoid exposing them to high-pressure water or prolonged periods in wet conditions.
- Ensure earbuds are dry before placing them back into the charging case to prevent damage.

Figure 9: The M100 earbuds are IPX5 water and sweat resistant.
6.3 Battery Care
To maximize battery lifespan:
- Avoid extreme temperatures.
- Charge regularly, even if not used frequently.
- Do not fully deplete the battery often.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds not pairing | Earbuds not in pairing mode or low battery. | Ensure earbuds are charged and removed from case. Check device's Bluetooth settings. Try resetting earbuds (five taps on L/R button after disconnecting Bluetooth). |
| No sound or poor audio quality | Volume too low, earbuds improperly placed, or connection issues. | Adjust volume on device and earbuds. Re-position earbuds for optimal sound. Re-pair the earbuds. |
| Charging case touchscreen unresponsive | Low battery or temporary software glitch. | Charge the case. Restart the case by closing and reopening the lid. |
| Earbuds fall out during activity | Improper fit. | Adjust the clip-on position and ensure the C-bridge is securely fitted around your ear. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | M100 |
| Brand | otinsile |
| Connectivity Technology | Wireless (Bluetooth 6.0) |
| Bluetooth Range | 10 Meters (30 feet) |
| Audio Driver Size | 14.2 mm |
| Noise Control | Environmental Noise Cancellation (ENC) |
| Water Resistance | IPX5 (Sweat and light rain resistant) |
| Earbud Weight | 4.1g per ear |
| Charging Case Battery | 500 mAh |
| Total Playtime | Up to 50 Hours (with charging case) |
| Charging Time | Approx. 2 Hours |
| Control Type | Touch Control (Earbuds & Case) |
| Compatible Devices | Cellphones, Gaming Consoles, Laptops |
| Included Components | Earbuds, Charging Case, USB-C Charging Cable, User Manual |
9. Important Notices
9.1 Packaging Color Clarification
Please note that for packaging efficiency, all boxes may show a purple headphone image. However, your actual earbuds will match your selected color (e.g., Rose Gold). Thank you for your understanding.

Figure 10: Packaging may show a different color than the actual product.