Rechargeable sound for both left and right ear digital sound amplifies sound approximately 30 volume no need to replace USB rechargeable collector,

【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.

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. ●Size/approx. width 1.5 x depth 0.8 x height 3.5cm ●Weight/approx. 5g ●Material/body: ABS resin, rubber tip: silicone ●Specifications/maximum operating time: approx. 35 hours, sound collection mode: 2 types ( Normal mode/noise reduction mode) Volume adjustment: 5 levels adjustment (up to approximately 30x) Set contents/Main unit, charging stand, USB charging cable, earpiece (6 types), instruction manual A rechargeable sound collector that does not require troublesome battery replacement. As we get older, everyone loses their hearing. But for those who don't want expensive equipment... The digital system allows you to hear loud, comfortable and safe. Maximum acoustic gain approximately 30 times! It's rechargeable, so no batteries are required. Since it is skin-colored, it blends into your skin and is hard to stand out. You can use it easily like earphones. Volume can be easily set by simply pressing a button. Can be worn on both ears.