Although I have never used them, I am listing them as "Like New" since they have been taken out of the bag. FeliCa lite-s rc-s966 IC Keyholder Quantity: 2 Waterproof: IP66 Weight: 4g Dimensions: 38 x 30 x 7.5mm Communication Method: FeliCa Communication Method, NFC (ISO/IEC 18092) Operating Frequency: 13.56MHz Chip Name: FeliCa Lite-S RC-S966 Communication Distance: Varies depending on the size of the reader device, but 1-20mm Memory Capacity: 224byte Anti-collision: Yes