... has many places superior to the old UV lamp, as following:1. Environment, general UV lamp is of ultraviolet lamp, such material contains mercury ... product can work as original 9W.3. Safe to carry, cause original pedicure lamp can make much heat when it is working ... , it doesnt need to change the lamp rottenly, saving the cost.5. Convenient to carry. Common UV lamp adopt tube to make light, it is ...