The table below summarises the plug types, voltage and frequency of electrical current in both Guinea-Bissau and Eswantini (Swaziland).
| Guinea-Bissau | Eswantini (Swaziland) | |
|---|---|---|
| Plug Types | C | M |
| Voltage | 220V | 230V |
| Frequency of electrical current | 50Hz | 50Hz |
Guinea-Bissau uses Plug Type C.
You will need this adaptor:
Socket Type
(Guinea-Bissau) to Plug Type M
(Eswantini (Swaziland))
The voltages found in Guinea-Bissau (220V) and Eswantini (Swaziland) (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Guinea-Bissau and Eswantini (Swaziland) is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.