Product Description This is a set of two USB small circulators. Operation has been confirmed, and they are currently working without any problems. Black: Topland Size is approximately 17 x 19 x 4 cm. Made in 2022. With a magnet, it can also be hung. Can also be used with dry cell batteries, but operation has not been confirmed. Includes an AC adapter and outlet. In a clean condition. White: DOSHISHA Size is approximately 15 x 15 x 9 cm. Made in 2011. Can also be used with dry cell batteries, but operation has not been confirmed. Shows signs of use, such as discoloration.