This is a Casio radio-controlled clock with a living environment notification function. It features a hybrid power supply that combines solar cells and a lithium battery, resulting in a very long battery life of approximately 5 years and requiring minimal maintenance. 【Main Features】 ・Radio reception function: Automatically corrects the time. ・Living environment notification: Displays warnings for "mold/dust mites" and "heatstroke" with icons based on the balance of temperature and humidity. ・Can be used as both a desk clock and a wall clock: It has a stand on the back, allowing it to be used as either. ・Display contents: Time, calendar (month, day, day of the week), temperature, humidity 【Specifications】 ・Size: Approximately 173 x 260 x 91 cm ・Weight: Approximately 590g ・Battery: CR123A x 1 Please purchase only if you understand that this is a used item. Please refrain from purchasing if you are overly concerned about condition. Thank you for viewing.