This is a cylindrical glass RFID tag; it's very similar to those implanted in pets for identification. But really, guys, it's not for use inside your body. Please don't implant this thing into yourselves or your loved ones. Each tag comes with a unique 32-bit ID code and is not reprogrammable. The carrier frequency of this tag is 125kHz, so it works great with the ID-3LA, ID-12LA, and ID-20LA RFID reader modules. We tested this RFID tag with one of our ID-12LA readers and measured a maximum read distance of about 10mm. https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2009-11-04 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2016-11-25 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2016-11-28 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2016-11-29 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2016-12-09 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2016-12-13 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2017-11-10 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2017-11-13 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2017-11-24 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2017-11-28 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2018-05-05 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2018-11-21 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2018-11-27 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2022-02-21 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2025-04-11 https://elecena.pl/product/930771/rfid-glass-capsule-125khz 2025-04-14