T5577 chip Operation frequency: 125 kHz Read and rewrite key tags Detection distance: 07 cm Erasable life: 100,000 times Data storage: 10 years Compatible with most door entry systems Easy to carry Water resistant Can read and rewrite Compatible with most RFID readers for access New key inductive card for entrance guard system Suitable for access control, hotel locks, staff attendance, school campus access and payment control, identification and security systems, parking lot entry and payment, social security management, transportation payment, municipal and ancillary service payment Please note: The 125 kHz T5577 chip card is blank and cannot be read until data is written to it Designed for RFID 125 kHz duplicators; can copy most ID cards such as access cards, district cards, parking cards, etc. Color: Mixed colors (Red, Yellow, Blue, Dark Green, Black 2 pieces of each color) Material: Plastic Package Contents: 10 x Keyfobs Token Tags Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement allowance is +/- 13 cm.