Panasonic RZ-B310W
Panasonic ErgoFit RZ-B310W True Wireless Earbuds User Manual
Model: RZ-B310W
Introduction
This manual provides detailed instructions for the Panasonic ErgoFit RZ-B310W True Wireless Earbuds. These earbuds feature active noise cancellation, XBS powerful bass, Bluetooth 5.3 connectivity, and a secure ErgoFit design with customizable earpiece sizes. Please read this manual thoroughly to ensure proper use and optimal performance of your device.

Image: Panasonic ErgoFit RZ-B310W True Wireless Earbuds and charging case. The image displays the two earbuds and their compact charging case, all in black.
Setup
1. Unboxing and Initial Charge
Upon opening the package, ensure all components are present: the Panasonic ErgoFit RZ-B310W earbuds, charging case, USB charging cable, and multiple earpiece sizes (S, M, L).

Image: A person's hands holding one Panasonic ErgoFit RZ-B310W earbud and the charging case, demonstrating the compact size.
Before first use, fully charge the earbuds and the charging case. Connect the USB charging cable to the charging case and a power source. The indicator light on the case will show charging status.
2. Selecting Earpiece Size
The earbuds come with three earpiece sizes (Small, Medium, Large) to ensure a comfortable and secure fit. Experiment with each size to find the one that provides the best seal and comfort for your ears. A proper seal is crucial for optimal sound quality and noise cancellation performance.

Image: A diagram illustrating an earbud correctly placed in an ear, alongside icons representing Small, Medium, and Large earpiece sizes for personalized comfort.
3. Bluetooth Pairing
- Open the charging case. The earbuds will automatically enter pairing mode, indicated by a flashing LED light on the earbuds.
- On your device (smartphone, tablet, etc.), go to the Bluetooth settings.
- Select "RZ-B310W" from the list of available devices.
- Once connected, a confirmation sound will play, and the LED indicator on the earbuds will stop flashing.

Image: A person wearing the Panasonic ErgoFit RZ-B310W earbuds and interacting with a smartphone, highlighting the Bluetooth 5.3 wireless connection.
Operating Instructions
1. Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on. Alternatively, press and hold the touch sensor on both earbuds for approximately 3 seconds.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off and begin charging. Alternatively, press and hold the touch sensor on both earbuds for approximately 5 seconds.
2. Touch Controls
The RZ-B310W earbuds feature intuitive touch sensors on both earbuds for various functions:

Image: A person gently touching the side of a Panasonic ErgoFit RZ-B310W earbud, demonstrating the touch control functionality.
- Music Playback:
- Single tap: Play/Pause
- Double tap (Right earbud): Next track
- Double tap (Left earbud): Previous track
- Volume Control:
- Triple tap (Right earbud): Volume Up
- Triple tap (Left earbud): Volume Down
- Call Management:
- Single tap: Answer/End call
- Press and hold (2 seconds): Reject call
- Voice Assistant: Press and hold (2 seconds) on either earbud to activate your device's voice assistant (Siri, Google Assistant).
3. Noise Cancellation Modes
The earbuds offer different audio modes to suit your environment:

Image: A graphic representation of active noise cancellation, showing sound waves being suppressed around the earbuds.
- Active Noise Cancellation (ANC): Reduces ambient noise for an immersive listening experience. Ideal for travel or noisy environments.
- Ambient Sound Mode: Allows you to hear your surroundings while still enjoying your audio. Useful for awareness in urban areas or during conversations.
- Normal Mode: Noise cancellation is off.
To switch between modes, single tap the touch sensor on the left earbud. Cycle through ANC, Ambient Sound, and Normal modes.
Maintenance
1. Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove the earpieces and clean them with mild soap and water if necessary. Ensure they are completely dry before reattaching.
- Do not use harsh chemicals or abrasive materials for cleaning.
2. Storage
When not in use, store the earbuds in their charging case to protect them from dust, damage, and to keep them charged.
3. Water Resistance
The Panasonic RZ-B310W earbuds are rated IPX4 water-resistant, meaning they are protected against splashing water from any direction. This makes them suitable for light rain or sweaty workouts. They are not designed for submersion in water.

Image: An icon indicating IPX4 water resistance, featuring two water droplets.
Troubleshooting
- Earbuds not pairing: Ensure both earbuds are charged and out of the case. Turn off and on your device's Bluetooth. If issues persist, try resetting the earbuds (refer to manufacturer's website for specific reset instructions).
- No sound or low volume: Check the volume levels on both your device and the earbuds. Ensure earbuds are properly seated in your ears and the correct earpiece size is used for a good seal.
- Noise cancellation not effective: Verify that ANC mode is activated. Ensure earbuds are securely fitted with a good seal in your ear canals.
- Earbuds not charging: Ensure the charging cable is securely connected to both the case and the power source. Check for any debris in the charging ports or on the earbud contacts.
- Intermittent connection: Keep your device within the Bluetooth range (approximately 10 meters/33 feet) and avoid obstacles that may interfere with the signal.
Specifications
| Model Name | RZ-B310W |
| Noise Control | Active Noise Cancellation |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Audio Driver Size | 10 Millimeters |
| Battery Life (Earbuds) | Up to 5 hours (with NC on), Up to 6 hours (with NC off) |
| Total Battery Life (with Case) | Up to 16 hours (with NC on), Up to 26 hours (with NC off) |
| Charging Time | 2.5 Hours (for case and earbuds) |
| Water Resistance Level | IPX4 |
| Item Weight | 0.165 Ounces (per earbud) |
| Product Dimensions | 0.98 x 0.87 x 1.3 inches |
| Included Components | Charging Case, Ear Cushions (S/M/L) |
| Control Type | Voice Control, Touch Sensors |
Warranty Information
Specific warranty details for the Panasonic ErgoFit RZ-B310W True Wireless Earbuds are typically provided with the product packaging or can be found on the official Panasonic website. Please refer to the documentation included with your purchase or visit the manufacturer's support page for the most accurate and up-to-date warranty terms and conditions.
Support
For further assistance, product registration, or to access additional resources, please visit the official Panasonic support website:
You may also contact Panasonic customer service directly for personalized support.
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