--- product_id: 468287652 title: "RFID Rewritable Dual Frequency In One ID T5577&IC CUID Black Ceramics Smart Finger Ring Wear for Men or Women" brand: "riversmerge" price: "282.45 DT" currency: TND in_stock: true reviews_count: 9 category: "Riversmerge" url: https://www.desertcart.tn/products/468287652-rfid-rewritable-dual-frequency-in-one-id-t5577-and-ic store_origin: TN region: Tunisia --- # Premium zirconia ceramic Dual-frequency RFID tech Rewritable T5577 chip RFID Rewritable Dual Frequency In One ID T5577&IC CUID Black Ceramics Smart Finger Ring Wear for Men or Women **Brand:** riversmerge **Price:** 282.45 DT **Availability:** ✅ In Stock ## Summary > 💍 Unlock the future on your finger—wear innovation, wear power. ## Quick Answers - **What is this?** RFID Rewritable Dual Frequency In One ID T5577&IC CUID Black Ceramics Smart Finger Ring Wear for Men or Women by riversmerge - **How much does it cost?** 282.45 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/468287652-rfid-rewritable-dual-frequency-in-one-id-t5577-and-ic) ## Best For - riversmerge enthusiasts ## Why This Product - Trusted riversmerge brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Keyless Freedom:** Ditch bulky keys and cards—carry your access credentials in a stylish ring. - • **Dual-Chip Powerhouse:** Seamlessly combines ID T5577 & IC CUID for unmatched versatility. - • **Effortless NFC Copying:** Copy old IC cards directly with your Android NFC phone—no extra hardware needed. - • **Sleek & Durable Design:** Crafted from black zirconia ceramic for all-day comfort and standout style. - • **360° Omni-Directional Sensing:** Experience superior read range and reliability from every angle. ## Overview This black zirconia ceramic smart ring integrates dual RFID chips (ID T5577 and IC CUID) operating at 125kHz and 13.56MHz frequencies. It supports rewritable functionality and direct NFC copying via Android devices, featuring 360-degree omni-directional sensing for enhanced read performance. Designed for both men and women, it offers a sleek, durable alternative to traditional access cards and keys. ## Description Product details: Chip: Dual chip T5577+CUID Frequency: ID&IC Inner diameter of ring: 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm Color: Black Material: zirconia cormic + epoxy Review: Gen4 GDM works great! - Like the other reviews have said, it's using a gen4 GDM chip for the HF side, and a T5577 for the LF side. It's essentially the ultimate ring, with the two best chips on the market inside of it. Works great for almost every install I've come across, especially if you know how to 'downgrade' credentials. (literally just writing the wiegand in a different format) Review: Works overall - could do with better range - So I picked this one for it's dual frequency capabilities. The preprogrammed IC 13.56 Mhz appears to be a Mifare Classic 1k 10 digit. The ID 125khz chip ships blank- this needs to be coded with a reader. The 13.56mhz function works with my digital locks - it works (after coding this into the lock) although the ring needs to be right next to the keypad. I then programmed the 125khz chip with a cheap reader/writer for the time clock. That also works, but it took a bit to get the reader / writer to work. Issue appears similar to the 13.56 chip being very limited range / low signal echo. Otherwise, after getting it going, it does what it's supposed to in a nice format (ie. I don't have to carry keys, fob or cards anymore). ## Features - 1.There are 2 chips in the ring, one is ID T5577, another one is IC CUID. - 2.ID T5577 chip is blank, it can not be used without written or copy. - 3.IC CUID chip is pre-programmed, you can directly authorize it to work if you are administrator. You can also use it to copy your old IC card. If you have android NFC phone, you can copy your old card IC card without a copier. - 4.Both ID and IC use 360-degree omni-directional sensing technology, the sensing effect is much higher than similar products in the market. - 5.Our ring is made of zirconia ceramic material, which is very comfortable to wear. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B3CWMS3K | | Best Sellers Rank | #132,134 in Electronics ( See Top 100 in Electronics ) #202 in Smart Rings | | Brand Name | riversmerge | | Color | Black | | Customer Reviews | 3.5 out of 5 stars 34 Reviews | | Gem Type | No Gemstone | | Gem type | No Gemstone | | Included Components | 1pcs rfid ring | | Item Type Name | ring | | Item Weight | 0.03 Kilograms | | Item type name | Ring | | Item width | 0.98 inches | | Manufacturer | Riversmerge | | Material | Ceramic | | Metal Type | No Metal Type | | Metal type | No Metal Type | | Occasion | Anniversary, Bachelor Party, Back to School, Birthday, Christmas | | Ring Form Type | Band | | Ring Size | 125khz+13.56mhz 19mm | | Ring size | 125khz+13.56mhz 19mm | | Stone Creation Method | Synthetic | | Style | fashion | ## Images ![RFID Rewritable Dual Frequency In One ID T5577&IC CUID Black Ceramics Smart Finger Ring Wear for Men or Women - Image 1](https://m.media-amazon.com/images/I/513bjghvFYL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Gen4 GDM works great! *by N***D on February 28, 2025* Like the other reviews have said, it's using a gen4 GDM chip for the HF side, and a T5577 for the LF side. It's essentially the ultimate ring, with the two best chips on the market inside of it. Works great for almost every install I've come across, especially if you know how to 'downgrade' credentials. (literally just writing the wiegand in a different format) ### ⭐⭐⭐⭐ Works overall - could do with better range *by M***E on December 19, 2024* So I picked this one for it's dual frequency capabilities. The preprogrammed IC 13.56 Mhz appears to be a Mifare Classic 1k 10 digit. The ID 125khz chip ships blank- this needs to be coded with a reader. The 13.56mhz function works with my digital locks - it works (after coding this into the lock) although the ring needs to be right next to the keypad. I then programmed the 125khz chip with a cheap reader/writer for the time clock. That also works, but it took a bit to get the reader / writer to work. Issue appears similar to the 13.56 chip being very limited range / low signal echo. Otherwise, after getting it going, it does what it's supposed to in a nice format (ie. I don't have to carry keys, fob or cards anymore). ### ⭐ Works 30% of the time. *by D***D on February 23, 2025* The “dual” does not work properly. You need to rub all over the ring for the sensor to sense the frequency such as 125khz. Waste of time, you’ll look ridiculous having a ring on waving on the sensor many times until it detects. Sometimes it won’t detect at all. These are garbage. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/468287652-rfid-rewritable-dual-frequency-in-one-id-t5577-and-ic](https://www.desertcart.tn/products/468287652-rfid-rewritable-dual-frequency-in-one-id-t5577-and-ic) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-07*