Widely used in circuit testing, printing and detection of jewelry appreciation of insects and flowers, photography, medicine, and other areas of the skin, hair, eye, etc.. With purple light can detect watermark coins. Universal for all mobile phones.

Built-in 120mAh battery, continuously work for 2 days and standby 10 days; Designed with micro USB charging port; 4-LED white light and 4-LED purple light (there is a switch on the side of lens to select white light or purple light). The purple light also can be used to check banknote money or watermarks.