Parameters Frequency: customized 125KHz/250KHz/375KHz/500KHz Read distance: 2~ 10cm, depending on the Reader and the application environment Wipe the number: >100,000 ugboro Nchekwa: 10 years Working temperature: -20℃~+80℃ Packaging materials: ABS Size: 43× 30 × 5mm ma ọ bụ 50 × 30 × 5mm, can be customized Colors: red, green, acha anụnụ anụnụ, odo, ọcha, etc.