ITEM NAME:10Pcs Key Copy Rewritable Writable Rewrite ID Card Card Access Duplicate Co E1Y0 Product description: (10 sets) id copy button waterproof Can read and write Each has a key ring No external energy required. Frequency: 125 KHZ Chip type :t5577/em4305 chip Type: read and override key tags Waterproofing: waterproofing Weight: 40g (10 pieces) Size: approx. 35x29x5mm Packpage includes: 1X(10 sets) id copy button.Each has a key ring. (10 sets) id copy button. Can read and write. 1X(10 sets) id copy button. Chip type :t5577/em4305 chip. Weight: 40g (10 pieces).