Just cloned my gym access card onto one of these fobs using NFC Magic app on my Flipper Zero—took less than 30 seconds! The ABS plastic feels sturdy, and the keyring attachment is clutch for my lanyard.

Pro tip: If you're using Proxmark3, remember to use `hf mf cload` instead of `hf mf restore` for UID updates (learned this the hard way). These handled 50+ rewrites so far without glitches.

Perfect for adding family members to my Home Depot smart lock—no more sharing physical cards. The water-resistant feature survived an accidental washing machine cycle (keys still worked!).

Only gripe? Doesn't work with my office's 125KHz system, but that's clearly stated. For 13.56MHz projects, these are golden.