Spearmark hello kitty clip on bed light is perfect for snuggling down at bedtimes to read a favourite book and attaches easy and quickly to most bed frames; single, double or a bunkbed. With its large user-friendly on/off button and bright energy saving LEDs, this versatile light can be powered by mains adapter or by batteries - meaning that it's fully portable and can go wherever a child's imagination may take them. Battery or mains operated. For mains operation please use a transformer/adapator with: Input voltage: 220 – 240 volts / 50 – 60Hz Output: 5 volt 1000mA. For batteries - requires 3 x AA. Measures 10.70 cm width by 6 cm height by 44.50 cm depth.