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True Wireless Earbuds RZ-S300WE


#SoundOn - Stay connected. No matter what.

The S300W true wireless headphones provide stable connectivity for crystal clear calls and the lightweight, compact design allows you to enjoy your music and conversations wherever, whenever.
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Stable Connections Even in Crowded Areas

Say goodbye to brief interruptions to your music or calls, even in crowded places, thanks to the optimised touch sensor and antenna in the compact cabinet design, complemented by a Left-Right Independent Signalling System. Enjoy the stable connection you deserve, wherever you are.
Stable Connections Even in Crowded Areas

Unique Antenna Structure

The small product size was achieved thanks to an integration of our Bluetooth antenna and touch sensor inside the control section, while also improving connection stability. With our own proprietary design of the antenna structure, antenna performance is maximized even in a small product cabinet.
Unique Antenna Structure

Left-Right Independent Signalling System

Most wireless headphones receive the smart phone signal in one earpiece, which transmits it to the other ear. This can produce drop-outs and unbalanced sound. Our Left- Right Independent Signalling system resolves this, as each earpiece receives a dedicated signal.
Left-Right Independent Signalling System

High-Quality Call Sound

Applies high-performance MEMS microphones built-in unique noise reduction (labyrinth cabinet) structure that can suppress wind noise. Unpleasant noises are reduced and call quality are improved.
High-Quality Call Sound

Compact Size with Perfect Fit

The rounded body fits comfortably in the ears even for long use. A massive amount of 3D ear data has helped design the angle and length of the sound ports.
Compact Size with Perfect Fit

Customize to Suit Your Needs

Panasonic Audio Connect App* supports 5 functions: Easy Pairing, Initialize Settings, Ambient Sound Control, Sound Mode Settings, and Find Headphones.
*Compatible with smartphones and tablets that are equipped with Android™ 6.0 or higher and that support Google Play™, or an iPhone ®, iPad ® and iPod Touch ® equipped with iOS 9.3 or higher.
Customize to Suit Your Needs

Convenient Functions

Ambient Sound Mode

Simply long tapping the touch sensor switches to Ambient Sound mode to capture external sounds while listening to music.
Ambient Sound Mode

Voice Assistant Activation

Voice assistant smartphone functions such as Siri®, Google Assistant™ and Amazon Alexa can be activated by operating the headphone’s touch sensor.
Voice Assistant Activation

IPX4 Water Resistance*

With IPX4-equivalent water resistance*, sudden showers are not a problem.
* Only the headphones are compatible with the IPX4 equivalent. It does not include the charging cradle.
IPX4 Water Resistance*

One Ear Use

The Role Swapping Function enables you to use one ear, left or right.
One Ear Use

Maximum 30 Hours Playback

The headphones deliver 7.5 hours of playback and up to 30 hours of playback.
Maximum 30 Hours Playback

Quick Charge

15 min of Quick Charge can deliver 90 min of playback time.
Quick Charge


1 Touch Sensor

Various operations are possible with the touch sensor
Touch Sensor

2 Mic for Call

High-performance 2 MEMS Mics for clear, high-quality call sound
Mic for Call

3 LED Indicator (Headphones)

LED blinks in blue or red
LED Indicator (Headphones)

4 LED Indicator (Charging Cradle)

LED indicates battery life in 3 steps
LED Indicator (Charging Cradle)

5 Charging Cradle

Compact and lightweight charging cradle features an easy-to-carry design
Charging Cradle

6 Charging Cord Socket (Cradle Exterior)

Quickly charge you headphones before going out with an USB Type-C cable
Charging Cord Socket (Cradle Exterior)

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Size and Weight


Headphones (one side only: L and R are the same)

  • Bluetooth®Bluetooth®
  • alexa built-inalexa built-in
  • Ambient Sound ModeAmbient Sound Mode
  • IPX4IPX4
  • 7.5 hrs of Playback7.5 hrs of Playback
  • 30 hrs of Playback with Cradle30 hrs of Playback with Cradle
  • Quick ChargeQuick Charge
  • Touch SensorTouch Sensor
  • Voice ControlVoice Control
  • Panasonic Audio AppPanasonic Audio App

No more interruptions to music or calls, even in crowded places, thanks to the optimized touch sensor and antenna, combined with the Left-Right Independent Signalling System.

Left-right independent signalling and our unique antenna design provide a reliable, powerful connection that is less sensitive to the interference and achieve reliable connectivity.

High-performance MEMS microphones are built in a unique labyrinth cabinet structure that allows excellent call quality. The S300W enables your voice to come through loud and clear.

Headphones deliver 7.5 hours of playback on a single charge and up to 30 hours of playback with charging case. 15 min of Quick Charge can deliver 90 min of playback time.


  • Driver Unit (mm)

    • 6 mm (1/4 in)
  • Magnet Type

    • Neodymium
  • Impedance (Ω)

    • -
  • Sensitivity (dB/mW)

    • -
  • Frequency Information

    • Frequency Response (with cord)
      • -
    • Frequency Band (with Bluetooth®)
      • 20 Hz - 20 kHz
  • Control/ Mic

    • Touch sensor / MEMS Mic
  • Playback Time with Battery (AAC)

    • Headphones
      • Approx. 7.5 hours
    • Headphones with Charging cradle
      • Approx. 30 hours
  • Charging Time (25°C/ 77°F)

    • Headphones
      • Approx. 2 hours
    • Charging cradle
      • Approx. 2.5 hours
    • Headphones with Charging cradle
      • Approx. 4 hours
  • Quick Charge (15 minutes, AAC)

    • Headphones
      • Approx. 90 minutes
  • Continuous Communication Time

    • Headphones
      • Approx. 4.5 hours*
        *May vary depending on smartphone.
  • Waiting Time

    • Headphones
      • Approx. 24 hours (Auto power off does not work)
  • Dimensions (W x H x D)

    • Headphones
      • Approx. 17 mm x 17 mm x 28 mm
    • Charging cradle
      • Approx. 74 mm x 39 mm x 30 mm
  • Weight

    • Headphones (one side only: L and R are the same)
      • Approx. 4 g (0.14 oz)
    • Charging cradle
      • Approx. 45 g (1.6 oz)
  • Supplied Accessory

    • USB charging cord: Approx. 0.5 m (1.6 ft)
      (Input Plug: USB A Shape, Output Plug: USB Type-C Shape),
      Earpieces set: XS, S, M, L (M attached)

Advanced Function

  • Bluetooth® Wireless Technology

    • Version
      • 5.0
    • Supported Profiles
      • A2DP, AVRCP, HSP, HFP
    • Codec
      • SBC, AAC
    • Operating Distance
      • Up to 10 m (33 ft)
  • Water Resistance

    • IPX4 Equivalent (Headphones only)
  • Dual Hybrid Noise Cancelling

    • -

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