What’s difference between mi fare 1k and 4K ? Can i use it to read & write as 1k card ?

the difference is memory. if you use mifare 1k cards,you can buy our MIFARE 1K Cards,it's cheaper. but please note the UID can't change.

Can these be written to as nfc cards?

sorry,no. if you want to compatible with all nfc phone,please choose our ntag215 cards: https://www.amazon.com/dp/B07LFDQBFC

can it be read by NFC smartphone?

can read by some phone.but can't support all phone.

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YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10)

YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10)

Product ID: 39603375

Details

Brand
YARONGTECH
Cellular Technology
GSM
Product Dimensions
3.37"L x
Service Provider
KABA SAFLOK
Unit Count
10 Count

💳Credit card size, sleek PVC design

💾4K (1K bytes) read/write memory

📡13.56MHz wireless frequency

₩31207

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Unlock the future of smart access with YARONGTECH’s 4K RFID cards!

BULK PACK CONVENIENCE - Get 10 individually packed cards, perfect for scaling your hotel or office access system with ease.
ROBUST 4 K MEMORY CHIP - Store and rewrite data securely with 1K bytes of reliable MIFARE Classic memory.
UNIQUE FACTORY SET ID - Each card comes with a non-rewritable 4-byte UID ensuring secure, tamper-proof identification.
SEAMLESS WIRELESS ACCESS - Operate effortlessly at the industry-standard 13.56MHz frequency for instant recognition.
SLEEK PROFESSIONAL DESIGN - Credit card-sized, blank white PVC cards ready for sublimation printing to match your brand identity.

YARONGTECH’s 4K RFID S70 Smart Card Pack of 10 features MIFARE Classic 4K chips operating at 13.56MHz, compliant with ISO14443A standards. Each credit card-sized PVC card includes a unique, factory-set 4-byte UID that is non-rewritable, ensuring secure and reliable wireless access control. Blank and sublimation-printable, these cards are ideal for professional hotel key systems and scalable access management.

Specifications

ASIN	B01LYBKM0U
Best Sellers Rank	#392,771 in Office Products ( See Top 100 in Office Products ) #1,119 in Identification Badges #2,271 in Home Security Systems
Brand	YARONGTECH
Built-In Media	Bag
Cellular Technology	GSM
Customer Reviews	3.9 out of 5 stars 51 Reviews
Global Trade Identification Number	00725350790301
Item Dimensions L x W	3.37"L x 2.13"W
Manufacturer	YARONG
Mfr Part Number	MIFARE Classic® 4K wristbands
Model Number	MIFARE Classic® 4K wristbands
Number of Items	10
Product Dimensions	3.37"L x 2.13"W
Service Provider	KABA, SAFLOK, MIWA, ONITY
UPC	725350790301 725350789701
Unit Count	10 Count

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₩31207

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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