Catch&Mark Pet Microchips ID TAG X2 Microchips Dog Animals KIT LOT 2.12x12mm 2.12x12mm RFID Glass Tag used for animal identification. ISO standart and approved by ICAR. This product requires a basic knowledge and does not contain instructions! free registration database: https://freepetchipregistry.com/ you need to do self registration after impalnt . there is no need to renew the registration unless there was any changes on the adress or the animal condition. you can also use other registration databases -Operating frequency- 134.2 kHzRegulations- ISO compliant 11784 - 11785Specifications Mainly suitable for veterinary clinics, shelters and breeders. If you do not have the necessary knowledge and experience avoid ordering this product, please.