Micronesia.

120 V · 60 Hz on Type A, Type B.

Runs on the American pattern end to end: 120 V at 60 Hz through flat-blade Type A and B sockets. Gear from the US and Japan plugs in without trouble; 230 V-only appliances from Europe need a transformer, not just a shape adapter.

The voltage window

A nominal 120 V supply may legitimately sit anywhere between 108 and 132 V (±10%). Dual-voltage gear (marked 100–240 V) shrugs at all of it.

Grid facts verified against IEC World Plugs — Micronesia. Prose is our own.

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Plug straight in — Micronesia runs 120 V 60 Hz on Type A, Type B.

Type A fits
Seats fine — this plug is unearthed by design.
the full story
Type B fits
Seats and keeps its earth.
the full story

Faces drawn to scale from pin dimensions · verdicts are physical fit + voltage math, not safety advice — when in doubt, ask the hardware store, not the internet.