---------------------------------------------------------------------- Cautions for Using Electrical Products We sell Japanese products. Please read the following precautions carefully to ensure safe use 【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. ---------------------------------------------------------------------- Tough specification with seawater compatibility, dust proofing, and cold and heat resistant performance. Equipped with an external sound capture function that makes it easier to hear surrounding sounds and people's voices Hands-free calling through voice calling app In addition to the stamina of up to 12 hours, which is enough for a full marathon, it also supports quick charging, which allows you to play for about 60 minutes with just 3 minutes of charging. Equipped with an OPR (operation) lamp that indicates the remaining battery level Included items: Earpieces (1 set of 2 of each size), swimming earpieces (1 set of 2 of each size), USB cradle, USB cable, adjustment band, instruction manual, precautions for use/main specifications, please read before using in the pool or sea, warranty, request for product registration.