It has two different color styles, beautiful starriess & verious inregular circles. When you press ON/OFF button, you can get starriess, then push back rotary switch, press ON/OFF button, you will get various irregular circles, which can chage smaller or bigger by your hand shake.

Specification:

1) Wavelength: 660nm
2) Output power: 50mw
3) Operate Voltage: DC 3V
4) Operate Current: <180mA
5) Size: 40(D)X112(L)MM
6) Battery: 2 *AAA
7) Material: Brass
8) Cover Color: Silver
9) Storage temperature: -20-60degree
10) Operate temperature: -10-40 degree