---
product_id: 40641189
title: "125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5)"
brand: "yarongtech"
price: "$28"
currency: NZD
in_stock: true
reviews_count: 1
url: https://www.desertcart.nz/products/40641189-125khz-rfid-bracelet-waterproof-em4100-read-only-adult-size-blue
store_origin: NZ
region: New Zealand
---

# Vibrant Color Options Waterproof Design 125kHz RFID Chip 125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5)

**Brand:** yarongtech
**Price:** $28
**Availability:** ✅ In Stock

## Summary

> 🔑 Secure Your Style with Every Wave!

## Quick Answers

- **What is this?** 125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5) by yarongtech
- **How much does it cost?** $28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/40641189-125khz-rfid-bracelet-waterproof-em4100-read-only-adult-size-blue)

## Best For

- yarongtech enthusiasts

## Why This Product

- Trusted yarongtech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Convenience:** Pack of 5 ensures you have enough for events, teams, or personal use.
- • **Unmatched Security:** Equipped with a 125kHz EM4100 chip for reliable access control.
- • **Stylish Versatility:** Available in five eye-catching colors to match any occasion or outfit.
- • **Unique ID Assurance:** Each bracelet comes pre-programmed with a unique ID for secure identification.
- • **Waterproof Durability:** Crafted from high-quality silicone, ensuring longevity in any environment.

## Overview

The YARONGTECH 125kHz RFID Bracelet is a waterproof, read-only wristband designed for adults. Each pack contains five bracelets, featuring a unique pre-programmed ID for secure access control. Made from durable silicone, these bracelets are available in multiple vibrant colors, making them perfect for events or everyday use.

## Description

eco friendly 125khz rfid EM4100 Waterproof silicone id wristband,rfid bracelet,rfid wristband  OEM: Logo / Image printing are availabel for bulk orders!  5pcs/lot waterproof RFID Wristband Completely sealed with 125KHz  ID chips, ISO EM4100 and compatible  Features Excellent stability, resistant-heat, coming from the silicone material, RoHS. Excellent waterproof, can be used directly in water. Recyclable for many times after sterilization. Environment friendly, re-usable! Typical Application Access control for events, concerts, sauna clubs, swimming pool, refrigeration house. Tracking for sports, field service. Membership management for water park, heath care, childcare, and so on.  Specifications  Frequency 125KHz  Standard ISO EM4100 and compatible  Material Silicone (100% SGS approved, RoHS, eco-friendly)  Working Temperature -30ºC - 75ºC  Color Blue in stock  Printing: no printing  Size Diameter: 60mm diameter  Package includes 5pcs RFID Wristbands (125KHz, ISO EM4100 and compatible)  Warranty: 100% tested before shipping! Please make sure your frequency is 125khz,and this chip is not H ID Chip. If you don't know if this is the right chip for you,please contact with us and give us some techincal data,so we can help you to double check. Thanks.

## Features

- 125khz rfid EM4100 Chip,Read Only,can't rewritable
- All the chip has pre-programmed with Unique ID,and it can't change,and it can't work with HID Reader.
- Blue,Red,Orange,Black,Green color in stock,Logo printing optional
- Diameter: 60mm for adult size
- Silicone material,waterproof

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | YARONG |
| Brand | YARONGTECH |
| Item Weight | 2.4 ounces |
| Package Dimensions | 5.1 x 3.5 x 1.9 inches |
| Item model number | wristbands-id |
| Is Discontinued By Manufacturer | No |
| Color | Blue |
| Shape | Round |
| Material Type | Silicone |
| Number of Items | 5 |
| Manufacturer Part Number | wristbands-id |
| Age Range Description | Adult |
| Item Weight | 2.4 ounces |

## Images

![125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5) - Image 1](https://m.media-amazon.com/images/I/41KVbb426RL.jpg)
![125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5) - Image 2](https://m.media-amazon.com/images/I/418b1N4Rz0L.jpg)
![125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5) - Image 3](https://m.media-amazon.com/images/I/51jRly32QhL.jpg)
![125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5) - Image 4](https://m.media-amazon.com/images/I/41KVbb426RL.jpg)
![125khz RFID Bracelet Waterproof EM4100 Read Only Adult Size Blue (Pack of 5) - Image 5](https://m.media-amazon.com/images/I/81atqw+-HkL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Is there a difference between em4305 and em4100? i have em4305 that work, but says unavailable now.**
A: Yes,it's different.
EM4100 is read only
Em4305 is rewritable.
Thanks.

**Q: Is there a trick to getting these to write? We've not been able to program them.**
A: actually not, you open the program on your computer, scan the bracelet on the door you are trying to open and that will give you the code you need to program it.

**Q: Can i remove the chip inside?**
A: No

**Q: Does this chip have the unique numbers already programmed?**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    125kHz EM4100 - Paxton compatible
  

*by L***N on Reviewed in the United States on March 7, 2018*

If you’re looking for something to use with your Paxton Net2 keypads, these are a win. They program into the system just fine. I also have a CHEAP ass desktop reader. If you scan this into Windows via the aforementioned cheap ass reader, it submits an 8 digit code to the active window / field. If you use Windows 10, and have PIN access configured, you can scan this as your PIN. Then you can sit down and swipe in. Slick as a rubber frog’s butt.1. Enable PIN2. Click on PIN field, then swipe.3. Repeat 2 in confirmation box4. Apply.If you are on a work domain, you will have to sign in to your computer with your regular login, and then simply lock your pc to walk away. Upon return, tap the keyboard to bring up the PIN input field and swipe on the aforementioned cheap ass reader. Of course, your IT admin may need to help. (I am the IT admin, so, you know, perks and whatnot.)This “trick” will work with almost any mutually compatible card & reader.

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**Shop now:** [https://www.desertcart.nz/products/40641189-125khz-rfid-bracelet-waterproof-em4100-read-only-adult-size-blue](https://www.desertcart.nz/products/40641189-125khz-rfid-bracelet-waterproof-em4100-read-only-adult-size-blue)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-09*