Function switch
1. I/R FLASH POINT-->Infra-red strobe pointer
2. I/R POINT-->Infra-red pointer
3. OFF-->Off
4. VIS POINT-->Visible pointer
5. VIS FLASH POINT-->Visible strobe pointer
6. OFF-->Off
**Invisible laser and illuminator only visible with night vision equipment**
Requires 1 x CR123A not supplied