Clock function Reporting function: rings every hour and 30 minutes. Specification of the back side of the clock Wall hanging hole on the top of the battery cover. Availability of rechargeable batteries Yes No. Size and number of batteries required AA alkaline dry cell battery LR6 (1.5V) 1 pc. 1 year of continuous operation.Main functions and performance Quartz watch. Main prohibited items Do not subject the watch to strong vibrations or shocks, do not use it in places subject to high temperature or humidity, do not disassemble or modify it. A manual might be in only Japanese. Please feel free to ask us. We would accept Return ONLY if the item were defective. Please contact me first before sending your item. International Buyers - Please Note. This item is in the category "Home & Garden\Home Décor\Clocks\Wall Clocks". The seller is "tokyoselect55" and is located in this country: JP. This item can be shipped worldwide.