Introduction
Welcome to your Rinsmola G21 Pro True Wireless Earbuds. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance and longevity of your device. Please read this manual thoroughly before using your earbuds.
What's in the Box
- Rinsmola G21 Pro Charging Box x 1
- Rinsmola G21 Pro Wireless Earbuds x 2
- Soft Silicone Ear Caps x 6 (L/M/S sizes)
- USB-C Charging Cable x 1
- User Manual (English, Spanish, French, etc.) x 1
Product Overview
The Rinsmola G21 Pro earbuds are designed for comfort and high-quality audio. The compact charging case features an LED display to show battery levels for both the case and individual earbuds.

Image: Rinsmola G21 Pro True Wireless Earbuds in their charging case, displaying battery percentage.

Image: Detailed view of the charging case's LED display indicating charge status.
Video: An unboxing and overview of the Rinsmola G21 Pro True Wireless Earbuds, demonstrating their design and components.
Setup
Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case. Connect the provided USB-C cable to the charging port on the case and a power source. The LED display on the case will show the charging progress. A full charge for the case provides approximately 36 hours of additional playtime for the earbuds.

Image: The Rinsmola G21 Pro charging case with earbuds, illustrating the USB-C charging port.
Initial Pairing
- Ensure the earbuds are charged.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth.
- Search for "G21 Pro" in the list of available Bluetooth devices and select it to connect.
- Once paired, the earbuds will automatically connect to your device when removed from the charging case for future use.

Image: Visual representation of Bluetooth 5.4 technology, highlighting quick connection and stability.
Video: A demonstration of the Rinsmola G21 Pro earbuds' features, including Bluetooth 5.4 pairing and ergonomic design.
Operating the Earbuds
Touch Controls
The Rinsmola G21 Pro earbuds feature sensitive touch controls on each earbud for easy management of audio and calls.
- Single Tap (L/R): Play/Pause music, Answer/End call.
- Double Tap (R): Next track.
- Double Tap (L): Previous track.
- Triple Tap (L/R): Activate voice assistant (Siri, Google Assistant).
- Press and Hold (2 seconds, L/R): Reject call.
- Press and Hold (3 seconds, L/R): Power On/Off.

Image: Touch control guide for the Rinsmola G21 Pro earbuds.
Call Management
The earbuds are equipped with 4 ENC (Environmental Noise Cancelling) microphones to ensure clear call quality by reducing ambient noise.

Image: Explanation of ENC noise reduction for calls, showing sound wave cancellation.
Music Playback
Experience Hi-Fi stereo sound with deep bass, delivered by 14.2mm graphene drivers and a triple-layer composite diaphragm.

Image: Internal driver components for high-quality stereo sound.
Single/Twin Mode
The earbuds support both single and twin mode operation. You can use either earbud independently for calls or music, or use both together for a stereo audio experience.
Maintenance
Cleaning
Regularly clean your earbuds and charging case to maintain optimal performance and hygiene. Use a soft, dry, lint-free cloth. For ear tips, remove them and clean with mild soap and water, then dry thoroughly before reattaching.
Water Resistance
The Rinsmola G21 Pro earbuds are IP-X7 waterproof, making them resistant to sweat, splashes, and rain. They are suitable for workouts and outdoor activities. However, they are not designed for swimming or prolonged submersion in water.

Image: Earbuds shown with water splashes, indicating IP-X7 waterproof feature.
Troubleshooting
Common Issues and Solutions
- Earbuds not pairing:
Ensure both earbuds are charged. Turn off and on your device's Bluetooth. Place earbuds back in the case, close, then reopen to re-enter pairing mode. Try pairing again. - No sound from one or both earbuds:
Check the volume level on your connected device and on the earbuds. Ensure earbuds are properly connected to your device. Try disconnecting and reconnecting. - Poor sound quality:
Ensure the ear tips provide a secure and comfortable seal in your ear. Try different sized ear tips. Clean any debris from the earbud nozzles. Ensure your device is within the Bluetooth range (up to 20 meters). - Charging issues:
Verify that the USB-C cable is securely connected to both the charging case and the power source. Ensure the charging contacts on the earbuds and inside the case are clean and free of obstructions. - Earbuds falling out:
Experiment with the different sizes of silicone ear caps (S/M/L) included to find the best fit for your ears. A proper fit is crucial for both comfort and sound quality.
Specifications
| Feature | Detail |
|---|---|
| Model Name | G21 Pro |
| Brand | Rinsmola |
| Connectivity Technology | Wireless (Bluetooth 5.4) |
| Bluetooth Version | 5.4 |
| Bluetooth Range | 20 Meters |
| Audio Driver Size | 14.2 Millimeters |
| Noise Control | Passive Noise Cancellation (ENC for calls) |
| Frequency Response | 20 KHz |
| Sensitivity | 108 dB |
| Control Type | Touch Control |
| Battery Life (Earbuds) | 6-8 hours (single charge) |
| Total Playtime (with case) | 40+ Hours |
| Charging Time | 1.5 Hours |
| Charging Interface | USB Type C |
| Water Resistance Level | IP-X7 Waterproof |
| Earbud Weight (each) | 3.6 Grams (approx. 0.13 ounces) |
| Case Weight | 30 Grams |
| Compatible Devices | iOS/Android Phones, TV, Computers, Laptop |
Warranty and Support
Warranty Information
Rinsmola provides a 2-year warranty for the G21 Pro True Wireless Earbuds. This warranty covers manufacturing defects. Please retain your proof of purchase for warranty claims.
Customer Support
For further assistance, technical support, or warranty inquiries, please visit the official Rinsmola website or contact their customer service department. You can find more information and contact details at the Rinsmola Store on Amazon.