BOSS Chromatic Tuner Metronome with for AAA Battery and Reference Tone Function TU-30 & Built-in Microphone/Input Guitar/Bass/Acoustic Instruments,

【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. Professional-quality tuner and versatile metronome functions are condensed into a compact design. It features chromatic, guitar, bass, and flat tuning modes. It features an AccuPitch function that signals the completion of tuning with a sound. The reference tone generation function allows you to tune while listening to a reference tone. A metronome function with a highly visible display and a variety of rhythm styles. Equipped with inputs compatible with electric guitars/basses and various other instruments. The built-in microphone allows for tuning of various acoustic instruments. It is powered by two AAA batteries, which are readily available anywhere.