This is the clock which used highly quality RTC module RT8564NB. This module is I2C controllable. At the time of poweron/reset, the start time received from ntp server. See: http://blogs.yahoo.co.jp/jf1vrr_station/19895596.html (Japanese)

Dependencies:   EthernetNetIf NTPClient_NetServices TextLCD mbed

TextLCD.lib/shortlog@7c1d3790f08d: not found in manifest