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Xperia Ear Duo x Sword Art Online-Asuna

Check the website to hear the samples.

Sony Store Bonus-Postcard
Aniplex+ bonus-B2 Tapestry.
Plugin App. Xperia Ear Duo(Asuna) releases late January 2019 on Google Play Store.
Sales ends 25 February 2019 10:00 JST.

Price: 38,750 yen.
Delivery from end January 2019.

They did the same with Xperia Ear.