Do these use c-rfm? C or f, are in printers. And in wood. And in oxygen.

Those keys are dual chip which are UID changeable with 4 byte UID and T5577 rewritable .

can i clone a mifare 1k card to it using a flipper zero??

On my fz it shows Mifare Classic 1K if I use Extra Action > Read Specific Card Type > Read Mifare Classic. Under Applications > Tools > NFC Magic > Check Magic Tag I get Classic Gen1A/B. There is then the option to wipe or write. I was able to successfully write the tag.

What color are these?

The ones I received are red, blue and yellow.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

المساعدة تتبع الطلب

الحساب عربة التسوق

Customised Version 1K UID Changeable & T5577 dual Chip IC/ID Key Tag Readable Writable Rewrite for Copy Clone Backup

Customised Version 1K UID Changeable & T5577 dual Chip IC/ID Key Tag Readable Writable Rewrite for Copy Clone Backup

Product ID: 173274613

Details

Brand
XCRFID
Color
Multicolor
Finish Type
Uncoated
Material
Acrylonitrile
Size
1 Count (Pack

💧Waterproof & dustproof ABS

🔄UID changeable 4-byte sector

🔑Dual chip T5577 & 1K UID

KD 7.21

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Clone, Control, Conquer – The Ultimate Dual-Chip Key Tag Revolution

BUILT TO ENDURE - Crafted from durable ABS material, these tags are waterproof and dustproof—ready for any environment.
PLUG PLAY CONVENIENCE - No external power needed—readable and writable on the go for instant access control and backup.
DUAL FREQUENCY POWERHOUSE - Seamlessly operate on both 125 kHz RFID and 13.56 MHz NFC systems for unmatched compatibility.
BULK READY FOR PROFESSIONALS - Pack of 10 high-quality tags designed for efficient cloning, backup, and secure access management.
ULTIMATE FLEXIBILITY WITH UID REWRITE - Change and clone your key tags effortlessly with 4-byte UID sector rewriting.

The XCRFID Customised Version 1K UID Changeable & T5577 Dual Chip Key Tag is a high-quality, durable ABS key fob featuring a rewritable 4-byte UID sector and dual-frequency chips (125 kHz RFID & 13.56 MHz NFC). Waterproof and dustproof, it requires no external power and supports seamless cloning, backup, and access control applications, making it ideal for professionals managing secure entry, attendance, and ePayment systems.

Specifications

ASIN	B0828JNQ62
Best Sellers Rank	#179,429 in Office Products ( See Top 100 in Office Products ) #489 in Identification Badges
Brand	XCRFID
Brand Name	XCRFID
Color	Multicolor
Customer Reviews	4.1 out of 5 stars 67 Reviews
Finish Type	Uncoated
Item Shape	Rectangular
Manufacturer	XCRFID
Manufacturer Part Number	XC393
Material	Acrylonitrile Butadiene Styrene
Material Type	Acrylonitrile Butadiene Styrene
Model Number	XC393
Number of Items	1
Number of Labels	10
Shape	Rectangular
Size	1 Count (Pack of 1)
UPC	612289268172
Unit Count	10 Count

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