The LimeLite nightlight uses a space age lighting material that is totally cool to the touch, making it safe even for little fingers! It is so energy efficient that if a LimeLite were in operation 24 hours a day, 7 days a week, for a year, it would only use 3 cents of electricity! It emits a soothing green glow that illuminates hallways, bathrooms, and provides a secure feeling in a bedroom. Its slim design make it easy to pack for trips away from home. Lifetime warranty.