1st Temperature Sensor (Texas Instruments) TMP112 marked as OBS. This might be one of the sensors that detects the ambient temperature as it is positioned away from the human body

25P32V6G - ST 32MB NOR Serial Flash Memory

Analog Devices - ADXL335B, 3-Axis Accelerometer

Freescale MPR121 Proximity Capacitive Touch Sensor Controller (for the 4 capacitive touch buttons) as listed at this site & pictured here

MSP430xG461x- Texas Instruments MSP430 family of ultralow-power mixed signal microcontroller. Built-in Temperature Sensor.

Unknown 31939591322

Unknown H852 3N47