Sennheiser CX True Wireless Bluetooth Earphones Color: White Bluetooth: 5.2 compatible Purchased the official Sennheiser product from Amazon in September 2022. The price was around 12,000 yen. While the box and instruction manual are not included, the other accessories are present. The battery life is quite good, requiring charging only once or twice a week, and I used them for a 2-hour round-trip commute. It was convenient as the earphones turn on when taken out of the case and turn off when put back in. You can also change the sound quality with the dedicated app. I am selling these as I no longer use them due to purchasing headphones. I have cleaned them briefly before listing. There are no issues with use, but I have lowered the condition rating due to the age of the product.