The plug claims to be 12A 250V, so I think its a NEMA 6-15R or 6-30R which handle 15 or 30 volts respectively.
Here is a picture of the outlet:
It looks like the Philippines uses a system similar to Europe, so it would be 1 hot ( 240V @60 Hz.), 1 neutral, and a ground.
Typical Worldwide Voltages
Japan, Taiwan, North America and some parts of northern South America.
100 - 120/240V ± 5% @ 60 Hz.
Europe, Africa, Asia, Australia, New Zealand and most of South America
230V ± 6% @ 50 Hz.
Here is a map of voltages and frequencies around the world from Wikipedia.