ARM Microcontrollers - MCU Ultra-low-power with FPU ARM Cortex-M4 MCU 80 MHz with 256 Kbytes Flash, 32bit LCD, USB - Part#: STM32L433CCU6 LDO Voltage Regulators 450MA ACTIVE DISCHARGE, XDFN-4 package - Part#: NCP161AMX180TBG Battery Management 800mA Linear Li Ion batery charger, 4.2V o/p - Part#: STBC08/STBC08PMR IMUs - Inertial Measurement Units Absolute Orientation 9-Axis Sensor - Part#: BMX-055 IC FLASH 8MBIT 80MHZ 8USON / Flash Memory 8M (1Mx8) 80MHz 2.7-3.6V Industrial - Part#:SST25VF080B-80-4I-QAE CAM-M8 RF Receiver BeiDou, GLONASS, GNSS, GPS 1.575GHz -167dBm On-Board, Chip Module - Part#:CAM-M8Q MOD BLE 4.2 NORDIC NRF52832 SOC - Part#:BMD-350-A-R MIC MEMS DIGITAL I2S OMNI -26DB - Part#:ICS-43432 FA128-Crystals 26MHz 10PPM -20C +75C 12.0pF (FA-20H26F10Z-AC3) - Part#:FA128 WiFi Module - MOD-WIFI-ESP8266 - Part#:MOD-WIFI-ESP8266 Electronic Battery Lith. Rchrgbl Battry 3.1V 3.4mAh Capacty, 5.8mm ( Part#:MS518SE-FL35E)