HQRP USB 5V to DC 9V/12V Step-Up Converter Cable for Sony SRS-RF90RK MDR-RF915RK
(HQRP® Step-Up Converter;. HQRP trademarked products. Output: DC 9V or 12V, 1000mA;. Input: 5V USB;. Sony SRS-RF90RK, MDR-RF915RK. This warranty is not transferable. South Korea. Arrived quickly and working, very happy ;-).