Hands-free calling headset for mobile phones and smartphones. YYK-520 Bluetooth single-earphone microphone with Japanese instruction manual. ☆Includes: Japanese instruction manual, charging case with battery level display, earphone pads, charging cord, original box, and a 2,000 yen gift certificate application card.☆ I used it once for a short time, but it didn't fit my ear, so I'm selling it. The main unit is in very clean condition. I confirmed its operation when taking the photos. The charging case has fine scratches, but there are no problems with use. The spare earphone pads have not been used. The charging cord has not been used. The original box has dents and tears from when it was opened. The 2,000 yen gift certificate application card seems to offer a 2,000 yen Amazon gift certificate if you post a review on Amazon. I will pack and ship using recycled materials. I may change the shipping method without notice. I can add photos and answer questions, so please feel free to ask in the comments section. Immediate purchase without comment is welcome. Regardless of comments or questions, I will prioritize transactions with those who purchase first. #Wireless #WirelessEarphones #EarphoneMicrophone #HandsFree #BluetoothEarphones #EarHookEarphoneMicrophone