HID® Global World Tag™ passive contactless transponders 125 kHz deliver reliable, cost-effective radio frequency identification (RFID) tag performance for light-duty, indoor applications. Chip Type: Unique (64 bit read-only). Black. Reading Distance: Dependent upon reader, environment and application. Operating Temperature: -25° to +70° C. Peak: 130º C. Options: Custom printed logo. Size: Ø 50 mm. MOQ: 1.000 units. Box Size: 250 pieces.