My archery club has a shooting line that is covered (no light) and when the targets were in the sun I couldn't see the pin. I got the LP kit with the HO LED and blue fiber and I can see the pin at a setting of 4 out of 10. It's nice and small and has a good tactile feel. As an electric car battery design engineer, I am glad this uses coin cell batteries because they will work in the cold where rechargeable lithium ion cells can't source current below 32 F.