Seiko Selection SBTM339 Solar Radio Sync Men's Watch - Silver/Blue

・Individual box and documentation included. ・Solar radio signal correction function (receives standard radio waves from Japan, China, America, Germany, and the United Kingdom). ・Full auto-calendar function (up to December 31, 2099). ・Metal allergy-resistant. ・Approximately 9 months of operation when fully charged, approximately 2 years when power save is activated.

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device's requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.

powerSource: Built-in rechargeable battery