Product Overview
The Music Sound TWS Capsules are comfortable, true wireless Bluetooth earphones designed for listening to music and making calls with freedom of movement. Their capsule shape ensures balanced sound and optimal comfort. The included charging case allows for multiple recharges, extending the total playback time.

Image: Music Sound TWS Capsules earphones shown with their charging case. The earphones are black, and the case features a black and white geometric pattern.
Package Contents
Verify that all items are present in the package:
- Music Sound TWS Capsules Earphones (Left and Right)
- Charging Case
- USB-C Charging Cable
- User Guide

Image: A flat lay showing the package contents: two black earphones, a black charging case with a geometric pattern, a USB-C charging cable, and a user guide booklet.
Setup
Initial Charge
Before first use, fully charge the earphones and the charging case. Connect the provided USB-C cable to the charging port on the case and the other end to a USB power source (e.g., computer USB port, wall adapter). The LED indicator on the case will show charging status.

Image: Close-up of an earphone showing a green LED indicator, signifying battery status or connection.
Operating Instructions
Pairing with a Device
- Ensure the earphones are charged.
- Open the charging case. The earphones will automatically enter pairing mode.
- On your smartphone, tablet, or other Bluetooth-enabled device, go to the Bluetooth settings.
- Search for available devices and select "Music Sound TWS Capsules" (or similar name) from the list.
- Once connected, a confirmation sound may play, and the LED indicator on the earphones may change.
The earphones are compatible with smartphones, tablets, laptops, and all devices equipped with Bluetooth technology.
Wearing the Earphones
Gently insert each earphone into the corresponding ear (L for left, R for right) until it feels secure and comfortable. The capsule design is engineered for an optimal fit and balanced sound.

Image: A person wearing one of the black Music Sound TWS Capsules earphones, demonstrating a comfortable and secure fit.
Basic Controls (Touch Control)
The earphones feature touch controls for various functions. Specific gestures may vary slightly, but common functions include:
- Play/Pause: Single tap on either earphone.
- Next Track: Double tap on the right earphone.
- Previous Track: Double tap on the left earphone.
- Answer/End Call: Single tap on either earphone during an incoming call or active call.
- Reject Call: Press and hold on either earphone during an incoming call.
- Activate Voice Assistant: Triple tap on either earphone (e.g., Siri, Google Assistant).
Battery and Charging
The earphones provide approximately 3 hours of playback on a single charge. The charging case can recharge the earphones up to 5 times, providing a total of up to 15 hours of music playback.

Image: Graphic illustrating the battery life: 15 hours total playtime with the charging case, and 3 hours on a single charge for the earphones.
Charging the Case
Use the provided USB-C cable to charge the case. Connect it to a standard USB power adapter or a computer's USB port. The LED indicator on the case will indicate charging status and full charge.
Charging the Earphones
Place the earphones back into their respective slots in the charging case. They will automatically begin charging. The case's battery level will be used to recharge the earphones.
Maintenance
- Keep the earphones and charging case clean and dry.
- Use a soft, dry cloth to wipe down the surfaces.
- Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
- Do not use abrasive cleaners or solvents.
- Store the earphones in their charging case when not in use to protect them and keep them charged.
Note: The earphones are not waterproof. Avoid contact with water or excessive moisture.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earphones not turning on. | Low battery. | Place earphones in the charging case and ensure the case is charged. |
| Cannot pair with device. | Bluetooth is off on the device; earphones not in pairing mode; interference. | Ensure Bluetooth is enabled. Open the charging case to activate pairing mode. Move closer to the device. Try forgetting the device in Bluetooth settings and re-pairing. |
| No sound or low volume. | Volume too low on device; earphones not properly connected; earphone placement. | Increase volume on your connected device. Reconnect earphones. Adjust earphone position for a better seal. |
| Only one earphone working. | One earphone not charged; connection issue. | Ensure both earphones are charged. Place both back in the case, close, then reopen to reset connection. |
Specifications
- Model: BTMSTWSCAPSULE213
- Connectivity: Wireless Bluetooth
- Earphone Type: In-ear (Capsule form factor)
- Playtime (single charge): Approximately 3 hours
- Total Playtime (with charging case): Up to 15 hours
- Battery Composition: Lithium-ion
- Charging Port: USB-C
- Features: Built-in Microphone, Touch Control
- Frequency Range: 20 Hz - 20,000 Hz
- Water Resistance: Not waterproof
- Manufacturer: CellularLine S.p.A.
- Country of Origin: China
Warranty and Support
This product comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included in your package or visit the official Music Sound website. For technical support, troubleshooting assistance, or to inquire about spare parts, please contact Music Sound customer service through their official channels.
Note: Information regarding software updates and spare parts availability is not provided in the product specifications.