... has the following features:1,Environmental protection, light use of LED, non-harmful substances to the human body;2,Energy-saving ... ,LED is a low-power devices, low power consumption machine;3,Does ... easily broken;6,Fast dry time, with the use of LED nail gel, the dry time is about 10-30 ... seconds;7,The use of low cost. LK-D12W led nail uv lamp nails