【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. The definitive version of the double-tone harmonica, No. 1521 ``Special Dragonfly Band,'' uses a flat cover with no unevenness on either end of the cover. It is designed with an emphasis on handling operability, making it easy to hold two or more of them one on top of the other. ◆ 21 holes for double notes ◆ Body: Wooden body ◆ Cover: Brass material chrome plated cover (flat specification) ◆ Size: W166 x H29.5 x D22mm ◆ Weight: 128g ◆ Hard case included ◆ MADE IN JAPAN