Home Wall AC Power Adapter/Adaptor Replacement for Sony MDR-RF985R/MDRRF985R, MDR-RF985RK/MDRRF985RK, MDRRF985RK/BJ, MDRRF985RK/C, MDRRF985RKMC1 Wireless Stereo Headphone System Connector type: Round Barrel/Round tip Generic AC Power Adaptor/Adapter can be used to power up the device Auto-Switching adapter can be used in the worldwide Input: 100-240V AC 50-60hz for using in the worldwide Output: DC 12V