【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. 【IP67 Fully Waterproof & Dustproof】The shell of this wireless fitness microphone is made of waterproof and sweatproof material, deep waterproof and resistant to sweat, moisture and dust. It is completely waterproof and can be completely submerged in water. Waterproof and sweatproof design can effectively extend user's usage experience and product life. [Clarier Sound Quality] The transmitter adopts waterproof and dustproof capacitors and built-in smart noise canceling chip, which can effectively eliminate environmental interference and capture audio accurately. Additionally, omnidirectional pickup technology makes the sound louder and clearer, providing a reliable and durable microphone. 【Ergonomic Design】This wireless waterproof microphone is designed for fitness coaches and sports people. Beautiful curves and simple shapes effectively improve the stability and comfort of the product. Weighing just 0.1 pounds, you'll barely feel it on your head and help eliminate cable shackles for maximum comfort and more freedom of movement. 【Plug & Play】This product adopts 2.4GHz wireless transmission, just turn on both the transmitter and receiver at the same time, and it can automatically connect within 2 seconds. The transmitter and receiver are fully charged in 2 hours and can be used for 6 hours. You can charge the transmitter and receiver at the same time using the 3 in 1 charging cable. 50M (165FT) transmission range is perfect for open areas. [Wide Interchangeability] The package includes an adapter cable for smartphones/PCs and 6.35mm (1/4 inch) adapters for amplifiers, audio mixers, speakers, etc. Perfect for swimming coaches, yoga coaches, fitness instructors, water aerobics coaches, spinning coaches, etc. 【IP67 Fully Waterproof & Dustproof】The shell of this wireless fitness microphone is made of waterproof and sweatproof material, deep waterproof and resistant to sweat, moisture and dust. It is completely waterproof and can be completely submerged in water. Waterproof and sweatproof design can effectively extend user's usage experience and product life.