I own 2 tritium fobs, and I've learned that they're not just nice to have, they're a must! No car keys or EDC tool should be without one. The titanium matches my knife well, and I have no worries about it getting knocked around. The black and titanium versions are both stylishly versatile as well, for backpacks or jackets, not just for tools. I couldn't be happier, and the strength of the glow is on par or better than most glow in the dark products.