HQRP 4V AC Adapter for LED Book Light, Music Light Power Supply Cord Adaptor + Euro Plug Adapter HQRP&reg; Replacement AC Adapter plus HQRP&reg; Euro Plug Adapter; Input: 100V-240V AC; Output: DC 4V, 400mA; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 1 Year warranty! Compatible with: Mighty Bright 37372B HammerHead LED Book Light, XtraFlex2 Book Light, HammerHead Music Light, Hammer-Head Xtra-Flex-2 40511 54810, Mighty Bright's Baby Bright, Duet2, Encore, Hammerhead, Orchestra, Vusion, and XtraFlex2 lights