Thank you for viewing. Operation confirmed. (Opened for operation check) ※ Paired with an MP3 player. I was able to listen to it without any problems. (I did not wear it on my head) No instruction manual. ■ Reference price on HP: 1400 yen Please purchase with the understanding that this is an overseas product (I believe it's Made in China). Since there is no outer box, it will be wrapped in bubble wrap and shipped via Nekopos.