Swatch Double Loop Small  -  SKB100S

This watch is for a wrist of maximum 17.5 cm.
Watch with Velcro strap and Snowpass function.
- Contactless RFID* chip EM Marin, 125 kHz, P4050 V2 f/40
- Read and write memory
- Up to 4 independent applications on the chip (fire-walled)
- Data encryption
- Chip works independently from the watch battery
- Unique ID number for each watch, laser programmed and cannot be altered.
For visual checks, the ID number is engraved on the watch case bottom.