Features: 1. Model: MF 1k NFC keyfob 2. Material: Eco-friendly ABS 3. Frequency: 13.56 MHz (Mi fare S50/S70, Ultralight, PLUS, DESfire, Ti..Ntag213 ,Ntag213,Ntag216. Topaz512,Desfire 2k/ 4k /8k,Plus-x /s 2K/4K etc) Available Chip:125KHZ and 860-960MHZ as well 4. Read distance: 3~ 10 cm 5. Meas.: 43 mm x 30 mm x 5mm , 36 mm x 29mm x 6.6mm 41mm x 33mm x 4.3mm. 37mm x 30mm x8.16mm 6. Waterproof (IPX4) 7. Free key ring and logo 8. Silkscreen logo, number, laser grave number, inkjet number 9. Operating temperature: -30°C to +80°C 10. Certification: IEC 14443 TypeA, ISO 18000-2, ISO 9001:2008