This blank 13.56 MHz RFID/NFC silicone bracelet contains a Mifare Classic 1K chip with 1 KB of writable EEPROM storage. The embedded chip and antenna are passively powered — no battery is needed. Simply hold the bracelet a few centimetres from a compatible 13.56 MHz RFID/NFC reader to read or write data.
The chip stores data in writable EEPROM divided into banks and supports over 100,000 re-write cycles. A permanent 4-byte serial number is factory-burned into each chip for unique identification.
Key Features
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1 KB Writable EEPROM – Divided into banks, supports 100,000+ write cycles
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Permanent 4-Byte UID – Factory-burned unique ID for identification (cannot be changed)
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Silicone Wristband – Comfortable, waterproof form factor suitable for wearable applications
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Passive Operation – No battery required; powered by the reader's RF field
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ISO/IEC 14443 Type A – Compatible with standard 13.56 MHz RFID readers
Specifications
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Frequency – 13.56 MHz
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Chip – Mifare Classic 1K (ISO/IEC 14443 Type A)
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Memory – 1 KB writable EEPROM
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Write Endurance – 100,000+ cycles
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UID – 4-byte permanent serial number
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Form Factor – Silicone bracelet
Ideal For
- Access control and event identification
- Attendance tracking systems
- RFID reader/writer prototyping and testing
- Wearable identification projects
Package Contents
- 1× RFID/NFC Silicone Bracelet (1 KB)
Note: This bracelet uses the Mifare Classic chipset (ISO/IEC 14443 Type A). Since approximately 2014, the NFC Forum no longer supports this chipset, so most newer smartphones cannot read or write to it. This only affects phone/tablet use — dedicated RFID readers (such as PN532-based boards) work without issue.
Jargon buster
Plain-language definitions for the technical terms used above.
- EEPROM
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A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
- RF
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RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
