1. LF 125 kHz, HF 13.56 MHz available; 2. Humanistic design for men and women 3. Multi-color choice 4. Free logo added... Product details:1. Material: Environment friendly Silicone;2. Waterproof of IP68, high temperature resistant and harsh resistant.;3. Ultrasonic plastic welding, highly waterproof & harsh resistant4. Chip: 125 KHz (EM4200, EM4305, TK4100, T5557);13.56MHz( Mifare s50, Mifare s70 ...