★★★★★
Buy it!
Michael G.—December 2, 2025
Looks great and works even better! Looks like a much more expensive ring. Programmed perfectly, sometimes you have to rotate ring on my finger to get it to work. Read more
Generic
T5577 Chip Epoxy Wood Grain Ceramic Rewritable 125kHz RFID Smart Finger Ring for Clone TK4100 or EM4100 Keycards
$25.49$79.99
About this item
- 【RFID chip】Using the original T5577 chip with a frequency of 125kHz, it can easily replicate TK4100 (EM4100) and EM4305 smart cards.
- 【 Ring Material 】It is made by dropping epoxy resin onto the shell of zirconia ceramics, which will not make people feel too bulky and thick visually and tactile. You can take it to shower and wash your hands.
- 【 Ring Size 】Sizes determined according to American standards: 6 #, 7 #, 8 #, 9 #, 10 #, 11 #, 12 #. Allowing you more choices without worrying about not having a ring that fits your size.
- 【 Usage Scenario 】ID smart cards with a frequency of 125kHz, such as TK4100 (EM4100) and EM4305, can be rewritten and replicated.
- 【 Product Advantages 】The ring made of zirconia all ceramic will not be damaged even when dropped at a height of 1 meter. It is waterproof, not easy to stick dust, and can be wiped clean with a clean cloth. You can wear it for outdoor activities such as running, swimming, etc.
$25.49
Was $79.99Save $54.50
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Technical specifications
| package_dimensions | 2.36 x 2.23 x 1.31 inches |
|---|---|
| item_weight | 0.64 ounces |
| manufacturer | BRIAN |
| date_first_available | July 6, 2024 |
| best_sellers_rank | #33,365 in Electronics ( See Top 100 in Electronics ) #95 in Smart Rings |
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Customer reviews
4.429 ratings
Customers say
Customers find the ring works well and appreciate its appearance, with one noting it looks like a more expensive piece.
★★★★★
Perfect ring for badge readers
Robert E. Bowen—November 29, 2025
This is exactly what I was looking for. I've done several write overs. The readers pick up the signal without touching. The distance is similar to my assigned card. It is stylish and fits well to the size chart. I highly recommend. Read more
★★★★☆
One minor issue overall works great
Joseph D. Moore-reeves—May 4, 2025
Works really well, not as good at hitting the sensor as the full size badge but if I hold it right in the middle of the pad it reads almost every time not matter orientation on my finger The only issue I have and knocking one star off is the epoxy that is used around the wood looking part seems to not have enough hardener from factory. It is starting to gel up some and is eating away. It still looks good and I wear it for yard work, house works, building things around the house. So it has been exposed to all sorts of conditions and 24/7 wearing since I got it about 3 or 4 months ago and it’s still holding up pretty well overall. Just a minor issue with the epoxy. I have smaller hands and fingers and the ring it replaced was thinker in thickness but I eventually got used to it on my finger. Sizing was pretty accurate. Read more
★★★★★
Works
Alice K.—November 23, 2025
Works perfectly. Thanks. Read more
★★★★★
No fuss
Grant Barney—November 13, 2025
Copied a cloned key with a flipper zero with no issues, seems durable and well made, better than I expected for a cheap off brand ring. Read more
★★★★★
Efficiency
Placeholder—January 11, 2026
Works great got it to copy my ID with the Flipper onto my ring never forgetting my door access ever lol Read more
★★★★★
One side works (but that’s just how these rings work)
John F—January 27, 2025
I could rewrite it to my personal RFID and scans just like my normal card Read more
★★★★☆
good looking ring
BarbBrian—January 13, 2025
its a decent read ring. sometimes you have to redo your attempts to make it read but it works Read more
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