This item is new and unused. The plastic cover has been opened to check the operation. ☆☆ During the operation check, the infrared light of the two buttons, SET and CLEAR, in the lower left corner of the image on the 5th photo, did not emit. I don't know much about the function of these buttons. All other button functions are normal, so it can be used as is. Please confirm the model number carefully from the images. Batteries are not included.