Currently, we offer three nighttime glow color choices:
• Firefly (Green, like Superman’s Kryptonite)
• Glacier (Sky Blue)
• Aqua (Turquoise)
Each of these nighttime colors varies in the length of time they glow IN COMPLETE DARKNESS.* Firefly glows the longest (up to 12 hours), followed by Aqua (up to 10 hours), and then followed by Glacier (up to 8 hours).
*The time of initial 100% charge to the time no visible glow can be detected.