Tech Specification R/W Standard ISO11784/5 FDX-B Frequency 134.2KHz/125KHz Operation Temperature -30°C to 50°C Color yellow(other colors are customizable) Weight 6.7g Height 13.3mm ± 0.3mm Diameter 29.9mm ± 1mm Material TPU(Thermoplastic polyurethane) Tension 350N Anticollision Standard IEC 68-2-27 Vibrating Standard IEC 68-2-6 Packing Manner exquisite packaging Guarantee >5 years International Certification International Committee For Animal Recording (ICAR)..