We sell the Swytch kit worldwide and provide chargers in UK (240V), EU (220V) and US (110V) versions. We advise that if you are from outside these locations, that you choose the charger that is closest to your countries voltage.
We send a UK charger, if your address is in the UK. EU charger, if your address is in the EU. US charger, if your address is in the US.
None of our chargers are dual voltage. However, you can purchase a second charger in a version that is not coming in your kit.
Example: You may be from the UK and want to take your Swytch bike to France on holiday. We advise purchasing a second EU charger from the accessories section.