Koss Porta Pro Communication Headset Flexible Electret Microphone Foldable Design Wired TRRS Plug Black Double-Sided On-Ear Hands-Free 3.5mm

------------------------------------------------------------------------------------------------------------------ 【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. ------------------------------------------------------------------------------------------------------------------ Traditional KOSS Porta Pro sound with powerful bass characteristics Go hands-free at home or in the office with a flexible electret boom microphone 3.5mm 4-pole mini plug allows easy connection to a computer or tablet Foldable headband design allows for storage and portability Headband side pressure can be adjusted to 3 levels with Comfort Zone mechanism