Working condition means it is minimally functional. It does not necessarily mean all functions are normal. If you have any concerns, please ask questions in advance. We cannot respond to complaints such as lights not turning on or alarms not sounding. We ask that only those who understand the above proceed with transactions. We are very inconvenienced by those who negotiate discounts or only check the condition without the intention of purchasing. Comments without replies will be deleted and the user will be immediately blocked. When negotiating prices, please state your desired price first. However, comments that are significantly off from our valuation will be immediately deleted. Comments asking "Can you lower the price?" are prohibited as they are a waste of time. We strongly refuse purchases from those who do not understand USED items and those who are nervous and seek perfection. Purchases are at your own risk. We would prefer to avoid those paying via convenience store/ATM. Convenience store/ATM payments are limited to those who can complete the procedure within 24 hours. CASIO Casio 6-piece set wave ceptor WVQ-100H WV-100J WVA-109HJ wave ceptor TOUGH SOLAR WVQ-400 LINEAGE TITANIUM LIN-171J standard MTP-1228DJ We are not considering selling individually. All items are working at the time of listing. The battery may be depleted and the item may become non-functional over time. We are selling as-is, so we cannot respond to complaints regarding the condition.