The front side of the motherboard:
STMicroelectronics F051K86 Entry-level ARM Cortex-M0 MCU with 64 Kbytes Flash, 48 MHz CPU, Motor Control and CEC Functions
Nordic Semiconductor NRF8001 Single-Chip Bluetooth Low Energy Connectivity IC
There are a few additional components on the board:
Four LEDs: one on the front side and a row of three on the back side
Fullriver 3.7 V lithium battery
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