About Mifare PLUS S 4K: 

-4 Kbytes EEPROM

-Simple fixed memory structure compatible with MIFARE Classic (MIFARE Mini, MIFARE 1K, MIFARE 4K)

-Memory structure as in MIFARE 4k (sectors, blocks)

-Unique serial number (4 or 7 byte)

-Multi-sector authentication

-Multi-block read

-Anti-tear function for writing AES keys

-Keys can be stored as MIFARE Classic keys (2 x 48 bit per sector) or AES keys (2 x 128 bit per sector)

-Access conditions freely configurable

-Number of single write operations: 200,000

About NXP Mifare PLUS S 4K White PVC Cards: 
-Dimensions: 86 x 54mm

-Thickness: 0.76mm-0.84mm

-Material: PVC, PET

-Surface: lamination (gloss/mate)

-Data storage time: minimum 10 years

-Operating temperature: -20 to +60°C

-Stockage temperature: -20 to +65°C  

Printing options:

-Full color offset printing with CMYK or Pantone colors

-Silk-screen printing with metallic, sliver effect

-Silver/Gold silk-screen printing background

-Personalization

Options for standart card:

-Magnetic stripe: 300oe, 2750oe, 4000oe

-Numbering

-Barcode printing

-Signature panel

-Embossing

-Encoding (according agreement)

MIFARE Plus provides end-user solution providers with a seamless upgrade of existing infrastructure and services with low cost procedures. This new MIFARE product has been developed and supported by card and reader manufacturers and solution developers, and is the only MIFARE Classic-compatible mainstream smart card IC featuring pre-issuance of cards prior to infrastructure changes.