When you purchase through affiliate text and image links on Seeking Tech, we may earn a commission.

Panasonic True Wireless Bluetooth Earphones: RZ-S300W vs. RZ-S500W

Panasonic recently released two new True Wireless Bluetooth Earphones with the RZ-S300W and RZ-S500W. So, which of these best fit your needs?

You can find out in this comparison guide.

Quick Summary

The Panasonic RZ-S500W is the better of the two new products as it features a bigger driver size in addition to having an ambient mode and 50 noise-cancellation settings.

With that said, the Panasonic RZ-S300W does have a longer battery life if you take into account the charging case. The RZ-S300W is also more affordable when compared to the RZ-S500W.

If you want the best sound and most features, then we recommend getting the Panasonic RZ-S300W True Wireless Bluetooth Earphones.

Otherwise, the Panasonic RZ-S500W True Wireless Bluetooth Earphones is a great alternative as it is more affordable and comes with a longer battery life.

If you are interested, you can purchase either of the two products on Amazon with the following links:

RZ-S300W vs. RZ-S500W Comparison Chart

 Panasonic RZ-S300W True Wireless Bluetooth EarphonesPanasonic RZ-S500W True Wireless Bluetooth Earphones
Color OptionBlack



Driver Size6 mm8 mm
Dual Hybrid Noise Cancellation?NoYes
Ambient Sound Mode?NoYes
Touch-Sensor Antenna?YesYes
MicrophoneMEMS microphone

Labyrinth structure
MEMS microphone

Labyrinth structure
Panasonic Audio Connect App?YesYes
Voice ControlAlexa

Google Assistant


Google Assistant

Water ResistanceIPX4IPX4
Ear Bud Battery LifeUp to 5 hours of playbackUp to 6 hours of playback
Charging Case Battery LifeUp to 26 hoursUp to 20 hours
Recharge Time4 hours4 hours
Warranty1-Year warranty1-Year warranty
PricingCheck price on Amazon.Check price on Amazon.

Color Option

The RZ-S300W True Wireless Bluetooth Earphones come with three color options:

  • Black
  • Green
  • White

The RZ-S500W True Wireless Bluetooth Earphones are available in two color variations:

  • Black
  • White

Driver Size

The RZ-S300W has a driver size of 6 mm while the RZ-S500W comes with a driver size of 8 mm. A bigger driver size usually means a bigger sound output assuming that everything else is equal.

Dual Hybrid Noise Cancellation

Dual Hybrid Noise Cancellation is a feature that is only found in the RZ-S500W True Wireless Bluetooth Earphones. You will have 50 noise-cancellation settings to block out all types of external noises.

Ambient Sound Mode

Also exclusive to the RZ-S500W is the ambient sound mode, which lets you hear the surround external sound in addition to the music. This is helpful if you want need to pay attention to any audible announcements as well as other scenarios.

With the touch sensor, you will be able to switch between the Ambient Sound, Noise Cancellation and Off modes.

Touch-Sensor Antenna

Both Panasonic True Wireless Bluetooth Earphones come with a touch-sensor antenna designed to provide a strong and stable connection to the two ear buds.


The two products also use a MEMS microphone that has a Labyrinth structure. With that combination, you should be able to minimize any external noises, such as piercing winds, when making calls.

Panasonic Audio Connect

The two earphones also support Panasonic Audio Connect. This app lets you easily connect the RZ-S300W or RZ-S500W to a compatible smartphone where you can customize your hearing experience in numerous ways.

Voice Control

With the aforementioned Panasonic Audio Connect, you can also control both ear buds using your voice. The app supports Alexa (which comes built-in), Google Assistant in addition to Siri.

Water Resistance

Both true wireless Bluetooth earphones have been rated for IPX4 water resistance, which means that the ear buds should be able to withstand light splashes of liquid.

Ear Bud Battery Life

The Panasonic RZ-S500W True Wireless Bluetooth Earphones has a slight advantage when it comes to ear bud battery life with up to 6 hours of playback per full charge. That is around 17 percent more than the Panasonic RZ-S300W True Wireless Bluetooth Earphones, which has up to 5 hours of playback.

Charging Case Battery Life

On the other hand, the RZ-S300W has the advantage when it comes to the battery life of the included charging case, which offers up to 26 hours. In comparison, the RZ-S500W’s charging case has a battery life at the maximum of 20 hours.

Recharge Time

Both the Panasonic RZ-S300W and Panasonic RZ-S500W have a recharge time of approximately 4 hours.


The two products come with an 1-Year warranty.