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/Wholesale 125KHz silicone rfid heat resisting wristband EM4305

Wholesale 125KHz silicone rfid heat resisting wristband EM4305

RFID wristband is a wristband with an RFID chip inside, the wristband is made of food-grade ecological silicone material, and can be used to replace RFID cards, biometrics or PINs. Custom colors, shapes and sizes are also accepted.

  • Material:

  • Color:

    Red, Green, Blue, Yellow, Black, White, Purple, or custom color.
  • Operating temp:

    -30℃ to +75℃
  • product details

Wholesale 125KHz silicone rfid heat resisting wristband EM4305

Product Description

Flexible, comfortable to wear, easy to use, waterproof, dustproof, moistureproof, shockproof, and resistance to high temperature.




Round watch


Large Size: Diameter 74mm, Weight 19g/pc.

Middle Size: Diameter 70mm, Weight 18g/pc.

Small Size: Diameter 65mm, Weight 15g/pc.

Baby Size: Diameter 45mm, Weight 13g/pc.

Material Color

Red, Green, Blue, Yellow, Black, White, Purple, or custom color.

Operating Temp

-30℃ to +75℃



1. Silk screen printing LOGO, or NUMBER

Chip Description:

EM4305 is a CMOS integrated circuit intended for use in electronic Read/ Write RF transponders. It is suitable for low cost solutions like animal tagging applications.

The IC is powered by picking up energy from a continuous 125 kHz magnetic field via an external coil, which together with the integrated capacitor form a resonant circuit. The IC reads out data from its internal EEPROM and sends it out by switching on and off a resistive load in parallel to the coil using a large modulation index. Commands and EEPROM data updates can be executed by 100% AM modulation of the 125 kHz magnetic field.

The EM4305 supports bi-phase and Manchester data encodings. The EM4305 operating modes are stored in the EEPROM configuration word. All EEPROM words can be write-protected by setting protection bits. The IC contains a factory programmed 32 bit unique identifier number (UID).


It is widely used in Amusement Park, School, Club, Event, Bus, Access Control, Outdoor Operation, where is very wet environment. It will work well after being soaked in water for a long time, or harsh environment conditions.

Detailed Images

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EM4305 RFID wristband

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Packing & Delivery

Packaging Details:
Packing details:  30pcs/inner box,600pcs/carton,10kgs/carton
Carton Size: 50*24*28cm
Lead Time : Shipped in 7 days after payment

Our Company

We are one of the most professional manufacturer of contact and contactless smart cards, smart tags and RFID reader. Since 2000, we provided billions of smart card/ RFID tag to our clients worldwide every year.

We established the important partnership with the major semiconductor companies worldwide, such as NXP, EM, TI, ST, Impinj, ATMEL, INSIDES, JEWEL, as well as Fudan Microelectronics, Huahong Group.


In order to provide the high quality and best service to our customers, D & H SMARTID was established. 


Over the past decades, D & H SMARTID has expanded its services, and products. Today D & H SMARTID can deliver smart card/ RFID Tag solutions and innovative services which help you and your customers to communicate in new and interesting ways.

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