Emits a faint glow for easier peep alignment in low light conditions A two minute charge or more from a bright (60 lumens or more) LED Light, or a full charge from direct sunlight can yield up to a 12 hour afterglow Selection of sizes to suit your scope and drawlength The faint glow of the peep is ideal for hunting in first light or last light When your eyes have fully adjusted to darkness the GlowPeep’s faint glow is perfect for hunting in complete darkness Range of colours available Proven Jim Fletcher design Groove Angle: 38 degree MaterialAluminium