Headset Panasonic RZ-B120W wireless in-ear calls/music Bluetooth USB Type-C, 20–20000 Hz, 10 m, black

Digital Wireless Stereo Earphones RZ-B120W deliver compact, wireless in-ear audio with extended battery life and enhanced bass from XBS technology. Ergonomically designed with an 'Ergofit' shape and 7 mm dynamic drivers, these earphones provide a secure fit and fuller low-end response while remaining lightweight and pocketable. The package includes a compact charging case that extends playback time and supports USB-C charging. IPX4 water resistance protects against splashes, and Bluetooth 5.3 ensures a stable connection and improved audio/call performance.

Advantages

The RZ-B120W combines extra bass performance with a snug ergonomic fit for comfortable daily wear. Long battery life gives up to 6.5 hours of continuous use from the earphones plus an additional 19.5 hours from the charging case. IPX4 rating makes them suitable for workouts and light rain. Touch controls and voice assistant compatibility (Siri and Google Assistant) simplify playback and call handling, while Bluetooth 5.3 provides quick and reliable pairing.

Key specifications

• Model: RZ-B120W digital wireless stereo earphones
• Driver: 7 mm dynamic drivers with XBS (eXtra Bass System)
• Wireless: Bluetooth 5.3, up to 10 m range
• Frequency response: 20 – 20,000 Hz
• Microphone: Built-in
• Battery: Built-in Lithium Polymer (LiPo); earphones up to 6.5 hours, charging case adds 19.5 hours
• Charging: USB-C
• Water resistance: IPX4

How to use

Charge the case and earphones using the supplied USB-C cable until fully powered. Remove the earphones from the case to power on and pair automatically with a Bluetooth 5.3-capable device; follow on-screen prompts if manual pairing is required. Place each earphone in the ear with the Ergofit shape for a secure seal. Use touch controls on either earphone to play/pause, skip tracks, adjust volume, or answer calls. To activate voice assistant, tap the earphone and speak the assistant’s wake words (Siri or Google Assistant). Return the earphones to the case after use to recharge.

Recommendations

For optimal bass and fit, try different ear tip sizes to achieve a snug seal. Avoid submerging the case in water despite the IPX4 rating—wipe dry if exposed to moisture. Keep the firmware of your paired device updated to benefit from Bluetooth 5.3 improvements.