The 40 Bit, 125khz Prox II Clamshell Proximity Access Card. This is HID's Part #1326LSSMV.

NO FACILITY CODE; AND NUMBERING IS ASSIGNED BY HID.

Proven, Reliable Technology.  Offers extremely consistent read range. Unaffected by body shielding or variable environmental conditions, even when close to keys and coins.

Thin. Can be carried with credit cards in a wallet or purse. Use with a strap and clip as a photo ID badge. Photo ID Compatible.  Print directly to the card with a direct image or thermal transfer printer. Slot punch vertically or horizontally for easy use.

Security.  Offers over 137 billion unique codes.

Long Life.  Passive, no-battery design allows for an infinite number of reads.

Durability. Strong, flexible and resistant to cracking and breaking