Specifications:

XBee3 Micro Module
Silicon Labs EFR32MG SoC
250Kbps RF, 1Mbps Serial data rates
Indoor/Urban range up to 200 ft (60 m)
Outdoor/RF Line of Sight range up to 4000 ft (1200 m)
8 dBm transmit power
-103 dBm receiver sensitivity
UART, I2C, SPI Interfaces (SPI currently not available at this time, but broken out on the board)
ISM 2.4GHz Frequency Band (802.15.4)
1MB of memory, 128KB RAM (32KB available for MicroPython)
20 GPIO Pins
Configurable via X-CTU or AT Command set via both USB and Wirelessly (second XBee 3 device required for wireless configuration unless you're using the mobile app)
Qwiic Compatible
On-board charging circuit and connector for 3.3v Lithium Polymer Ion Batteries (see related products for compatible batteries)
2.6VDC - 3.6VDC supply voltage
U.FL Antenna Connector