So you've got a Radiacode 102 or 103 and want to take your radiation detection on the move? This active band is exactly what you need! It's designed to comfortably secure your device around your ankle, which might sound weird until you realize it puts the sensor closer to the ground where it can pick up radiation sources way better. The ergonomic design means you'll barely notice it's there during hikes or urban exploration. The Velcro strap adjusts to fit ankles or arms from 8 to 13 inches, and there's a clear window so you can still see the screen and use the buttons without taking it out. Plus, the closed cover protects your expensive gadget from dirt, water splashes, and general outdoor abuse. There's even a reflective stripe for safety when you're out in low light conditions. The real game-changer? You can monitor radiation levels in real-time through the RadiaCode app on your phone via Bluetooth while your device stays protected. Whether you're a geology enthusiast, urban explorer, or just radiation-curious, this band makes field work so much easier and safer for your equipment.