It has a small folded trace antenna on the board edge. The metal USB housing acts as the RF shield. The bluetooth IC is an AS3620QA. Now we wonder what those tiny Buffalo drives look like inside.

"We are pleased to announce our relationship with CEVA to integrate their Bluetooth low energy IP into our BLE5 IC," said Liang Jie ... Established in 2000, it is one of the integrated circuit design ...