Mini Rotatable Mobile Phone Laser Level Compact High Precision OTG Connected With Mobile Phone

Rotatable Mobile Phone Laser Level Features: Cell phone laser level,this product is connected with your cell phone through USB(that your cell should support OTG fuction) when OTG operated the laser level will work.It can be used for fixing a drawing on the wall,fix the outdoors advertising,fix the windows and doors when your house decoration,also can beused for huge construction programme.etc...it's easy to operate,smart body,easy to carry. Turn on the laser mode: Different mobile phones have different installation methods.Some mobile phones can light up the product after you insert the product. Some mobile phones need to do the following steps after inserting the product. Open "Settings" and find "More Settings". There is an "OTG" switch in the phone. Click this function. the indicator lights up Specifications: Model: SW01 Optical power: