Name:Glass Tag Material: Glass Dimension 2.12*8mm Chip type:EM4102, EM4105, Hitags256 Operating frequency:134.2KHz Name:Glass tagDimension: ... .12mmx12mm, 3*13mm,3*15mm, 4*34mm, 1.5mm *7mmChip type EM4105, EM4305, Hitags256Operating frequency 125khz, 134.2KHzRead range: Up to ... %RH ,168hrESD voltage immunity +/- 2Kv peakMemory storage >10yrs, according to chip specifications RFID Glass Tag