Nikon digital in-the-ear Nikon Essilor NEF-M100S made in Japan right hand left hand for both ears For mild to mo

【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. Japanese-made digital hearing aids packed with special features. Easy battery replacement: Since the air battery operates regardless of whether the positive or negative side is facing upward, replacing the small and troublesome battery becomes very easy and smooth.