Thank you for viewing. Sumakin UVC Sterilizing Tumbler 480ml Black, with cord Stainless steel, double-walled vacuum flask Approximately 70mm x 70mm x 240mm, 300g A cord is included, but the wall adapter is not. Please prepare your own. Purchased online in May 2020 for 8,096 yen, used for about 3 years, and then stored at home. Power-on confirmed. It was dropped once, so the bottom is unstable, but there are no problems with use! Here's the product description that was posted online: ↓ Have you ever wondered if your water bottle is clean or if it's free of bacteria? Solve those worries! This is a revolutionary product that sterilizes the inside of the bottle with one touch. Just press the button on the cap, and the UVC light in the cap will self-clean the inside of the bottle in 90 seconds, sterilizing the inside of the water bottle by 99.9% with the power of deep ultraviolet UV-C lamps! The water in the water bottle is also UV-treated to decompose chlorine and purify it, so you can always enjoy clean and delicious drinks anywhere. It's USB rechargeable, so it's recommended for travel abroad or camping! Since a UVC-LED is attached to the cap, you can easily sterilize areas of concern, such as masks and mobile phones, in addition to the bottle and water, by using the cap. Caution ⚠️ Please do not look directly at the blue light inside the cap. ☆ This is a used item stored by an individual, so please purchase only if you understand. ☆ We are sorry, but we do not accept returns or claims after purchase. ☆ We will sell to the first person to purchase. ☆ We will reuse used cardboard boxes and cushioning materials for packaging. Thank you for your understanding.