Adhesive to adhere to the front windshield, on its surface. Frequency 860 ~ 960MHz FCC (US): 902 MHz ~ 928 MHz - ETSI (EU): 865.6 MHz ~ 867.5MHz, 896.85 MHz. Material: PVC, PET. Read / write cycles:> 100,000 cycles. Reading distance: 3 ÷ 10 m (in stable conditions and in relation to the reader used).