Function: Night light, ambient light, negative Ion Lamp Using natural crystal salt ore. Crystal salt lamps can purify the air and remove smoke and foul smell from the air. When the crystal salt lamp is warmed, negative ions are released, absorb moisture, and neutralized the superfluous positive ions in the air. The heated salt lamp can be regarded as a natural ion generator. The light of the natural crystal salt lamp is soft and pleasing, which is unmatched by any artificial lighting. It can effectively relieve fatigue of eye and make the eyes more comfortable. Its soft light can help you relax, stabilize your emotions, have the power of purification and sobriety, and is also very effective in healing and cultivating souls.Very good for office and home. Specification: Rated voltage: DC5V Rated power: 3W Working current: 100-600mA Power supply: USB charging Material: ABS + PC + Electronic components Dimensions: 9.4x14.1cm/3.7x5.55inch Base color: Black, White Quantity: 1 Set Note: 1.Please allow 0-1cm error due to manual measurement. . 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Table Lamp 1 x USB Cable