Introduction
Thank you for choosing the Newmsnr M21 TWS Bluetooth 5.2 Earphones. These compact and mini wireless earbuds deliver great sound quality with heavy bass, are waterproof and sweatproof, and offer long battery life thanks to their Bluetooth 5.2 core technology. Designed for comfort and versatility, they provide a stable, low-latency connection for both music and calls across a wide range of devices.

The M21 earphones feature a new generation of Bluetooth 5.2 for reliable wireless transmission, ensuring a stable connection up to 10-15 meters with low latency, making them ideal for gaming and music without noticeable lag. The ergonomic design provides a rounded feel for comfortable wear, and the intuitive key operations minimize accidental touches.
Setup Instructions
1. Initial Charging
Before first use, fully charge the earphones and the charging case. Connect the provided Type-C charging cable to the charging port on the case and a suitable USB power source. The charging case has a 300mA battery capacity, and the earphones have a 40mA battery each. A full charge for the earphones takes approximately 60 minutes.

2. Pairing with a Device
- Power On: Open the charging case. The earphones will automatically power on and enter pairing mode.
- Activate Bluetooth: On your mobile phone, tablet, or laptop, enable Bluetooth.
- Select Device: Search for "M21" in the list of available Bluetooth devices and select it to connect.
- Automatic Reconnection: After the initial pairing, the earphones feature memory pairing. They will automatically connect to the last paired device when taken out of the charging case, making connection one step faster.

The M21 earphones offer unrestricted connection and are universally compatible with Apple and Android devices, including mobile phones, tablets, and laptops.

Operating Instructions
Touch Controls
The M21 earphones utilize intuitive touch controls on each earbud to manage media playback and calls. The key operation design helps reduce accidental touches and provides natural comfort.
| Action | Left Earbud | Right Earbud |
|---|---|---|
| Play/Pause | Click 1 time | Click 1 time |
| Previous Song | Double-click | N/A |
| Next Song | N/A | Double-click |
| Answer/Hang Up Call | Click 1 time | Click 1 time |
| Reject Call | Double tap | Double tap |
| Activate Voice Assistant | Long press for 3 seconds | Long press for 3 seconds |

HD Calls with ENC Noise Reduction
The M21 earphones are equipped with ENC (Environmental Noise Cancellation) technology, which accurately tracks your speaking position and effectively blocks up to 90% of surrounding noise. This ensures clear calls even in noisy environments.

Maintenance
Cleaning
Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Avoid using abrasive materials or harsh chemicals. Ensure no moisture enters the charging port or speaker grilles.
Water Resistance
The M21 earphones feature life waterproof protection, meaning they are designed to withstand rain and sweat. This waterproof structure prevents water flow from affecting normal use and maintains sound quality. However, they are not designed for submersion in water. Avoid exposing them to excessive moisture or liquids.

Storage
When not in use, store the earphones in their charging case to protect them from dust and damage. Store in a cool, dry place away from extreme temperatures.
Troubleshooting
- No Sound/Connection Issues: Ensure both earbuds are charged. Place them back in the charging case, close the lid, then open it again to reset. Re-pair with your device if necessary. Check your device's Bluetooth settings.
- One Earbud Not Working: Try placing both earbuds back in the case, closing it, and then taking them out again. If the issue persists, try resetting the earbuds (refer to the pairing section for reset instructions if available, or consult manufacturer support).
- Charging Problems: Ensure the charging cable is securely connected to both the case and the power source. Check if the charging port is clean and free of debris.
- Poor Sound Quality: Ensure the earbuds are properly seated in your ears. Try cleaning the speaker grilles. Check the audio source device for any issues.
Specifications
| Feature | Specification |
|---|---|
| Product Name | Wireless Bluetooth Headset |
| Model | M21 |
| Brand | Newmsnr |
| Bluetooth Version | V5.2 |
| Working Distance | 10-15 meters |
| Charging Case Battery Capacity | 300mA |
| Headphone Battery Capacity | 40mA |
| Charging Time (Earphones) | Approx. 60 minutes |
| Number of Full Charges (from case) | Approx. 4 times |
| Playing Time | Approx. 5 hours |
| Call Time | Approx. 5 hours |
| Material | PVC |
| Charging Method | Charging case (Type-C) |
| With Microphone | Yes |
| Is Wireless | Yes |
| Active Noise-Cancellation | Yes (ENC for calls) |
| Volume Control | Yes |
| Control Button | Yes |
| Vocalism Principle | Dynamic |
| Wireless Type | Bluetooth |
| Communication | Wireless |
| Style | In-ear |
| Package Dimensions | 15cm (L) x 10cm (W) x 3cm (H) |
| Package Weight | 0.07 kg |

User Tips
- For optimal sound quality, ensure the earbuds fit snugly in your ears.
- Keep the charging case charged to ensure your earbuds are always ready for use.
- When experiencing connection issues, try turning off and on your device's Bluetooth, or resetting the earbuds by placing them back in the case.
Warranty and Support
For any product-related inquiries, technical support, or warranty claims, please contact the seller or refer to the product's official support channels. Keep your purchase receipt as proof of purchase.





