The Seeed Studio XIAO nRF52840 is an ultra-small size, ultra-low power Bluetooth development board based on the Nordic nRF52840. It features an on-board Bluetooth antenna, on-board battery charging chip, and 21*17.5mm thumb size, which makes it ideal for IoT projects. Powerful CPU- Nordic nRF52840, ARM® Cortex™-M4 32-bit processor with FPU operating at 64 MHz
Wireless capabilities- Bluetooth 5.0, NFC, and ZigBee module with on-board antenna
Ultra-small size- 21 x 17.5mm, Seeed Studio XIAO series classic form-factor for wearable devices
Ultra-low sleep power- 5 μA, deep sleep model