[Safe & Efficient]:Nail laser treatment device combined with 470nm blue laser and 910nm laser live treatment, safe and reliable, 7 minutes at a time, your nails be healthier and more beautiful. [Compact & ]:The device is fairly compact, made of a nice hard plastic material. and small enough to carry around. It is travel size. [Ease of charging]:That is very easy to operate charging. Just plug the device into a usb port with the provided cable to charge.The battery life is very long.However, it is still recommended to charge once every 3 days. [How to use]:When ready to use, simply open the device and clamp onto your finger/toe. When the lights automatically go out the 7-minute treatment is done, and you can take down the nail laser device. [Service cycle]:Treat your nail twice a day for 7 minutes. Please on using it continuously when you want it to have a significant effect, the short-term effect may not be obvious. [Tip]This product has 4 lights, and 1 light is not visible, which is normal. Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Colour: White Material: plastic Package Contents: 4 x Care equipment for manicure Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.