Earphones are for both ears only. Retail price was around 22,000 yen. I've used them several times. There were no problems with the quality. I am selling them because the case broke and they can no longer be charged. They are currently out of charge, so I think they will work again if you charge them. Please understand that returns and claims are not accepted after purchase. Product Description Wireless canal-type earphones with excellent fit. - Color: Black - Design: Canal type - Charging terminal: Contact type - Function: Wireless - Features: Shape that fits the ear Thank you for viewing. Other features: Junk, Gaming, Noise canceling