ROUNDS Portable Speaker Planned and Supported by Japanese Mini Smartphone Speaker USB Charging Android iPhone PC Portable Tablet Speaker 30W Small and

【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. [Small smartphone speaker with high sound quality] A portable speaker that can be used immediately by simply inserting it into any device including a smartphone. You can use it with just one touch, without any troublesome operations like with bluetooth speakers. This mini speaker is compact and extremely portable, weighing 30g, width 3.5cm, and height 3.3cm. Outdoors Easy to carry outdoors. [Compact and 4x louder] This is an extremely portable mini smartphone speaker, but it has high sound quality, outputs 3W, and can maintain up to 4x the volume. It can be used for music playback, movie playback, video chat, car navigation, etc. [USB rechargeable, no power supply required! ] You can charge it by connecting it to a device with a USB port such as a mobile or PC using a USB cable. While charging, the pilot lamp lights up to indicate the charging status. A Micro USB cable is included with the smartphone speaker. [Easy to use with smartphones that have an earphone jack] As a mobile speaker for smartphones with android devices such as iPhoneX, iPhone8Plus, iPhone8, iPhone7, iPhone7Plus, iPhone6s, iPhone6Plus, iPhone6sPlus, Samsung Sony, Xperia Galaxy, etc. You can also enjoy music, movies, videos, etc. as a speaker for your computer, tablet device such as iPad or iPad mini, Ipodtouch, MP3 MP4 vita Walkman CD player. It can also be used as a plug-in mini speaker for guitars. [Perfect as a present] The small and simple silver color designed smartphone mini speaker is highly recommended as a gift for friends and family. [12-month warranty for peace of mind] If there is a problem with your smartphone speaker, we will provide a 12-month free warranty. If you have any problems, please feel free to contact us via email on Amazon. We will respond promptly. We also accept requests for promotional items and novelty goods for corporations. Perfect as a Father's Day gift.