Sennheiser headphones open type HD 559 []

------------------------------------------------------------------------------------------------------------------ 【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. ------------------------------------------------------------------------------------------------------------------ Model: Dynamic/Open type Frequency characteristics: 14 ~ 26,000 Hz Impedance: 50Ω Sensitivity: 108dB Cable: 3.0m (left side out), 6.3mm stereo standard plug (straight type) 2 years warranty Accessories: 3.0m stereo standard cable, conversion plug