These cards are designed /produced for long range requestions.It can reach max to 1.3 meter range with my reader https://www.ebay.com/itm/321036474505 

Model: Mid-Range EM CARD

Specification：

1.100% brand new and high quality

2. Frequency: 125 KHz

3. Size: 85mm x 54mm x 1.8mm

5. Package included:10/50/100 pcs/package RFID Writable Cards based on your choice

6. Material: PVC

7. Each card pre-programed with unique ID number, which is print on the card.

8. Only read

9. Reading range 70 - 100cm

10. ID card is suitbale for 125KHZ EM4100/4102 card reader

Package:

10/50/100pcs Mid-Rang EM CARD