Ratch Aurora has got a color sharp memory display with a backlight. A LSM6DSOX IMU for motion tracking. NOR flash to store apps. A vibration motor for notifications and a Lipo battery. Its got 4 buttons called up, down, select and back. Everything is controlled by a NRF52840. 4 spring contacts are present which connect to the NRF52 USB interface. The power pins are used for charging the lipo. The focus quickly moved to developing the RatchOS rather than the watch hardware.