SONY wired closed studio monitor headphones black MDR-CD900ST

---------------------------------------------------------------------- 【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. ---------------------------------------------------------------------- Format: Sealed dynamic type, driver unit: 40mm, dome type (CCAW adopted) Maximum input: 1,000mW, impedance: 63Ω, sound pressure sensitivity: 106dB/mW Playback frequency band: 5~30,000Hz, Cord length: approx. 2.5m, plug: stereo standard plug, weight: approx. 200g (excluding cord)