Can I buy an extension for an AC power brick?

[Goose]

I bought a Lenovo Smart Clock and the power lead isn't long enough for where I want it to go and rather not use a bulky 3 pin plug extension.

I really dont know the first thing about power bricks, voltages, amps etc etc. so some advice would be most appreciated since I dont really want to blow up my device. I've included pictures of the Lenovo power brick so you know what i'm on about.

https://imgur.com/a/87679un

Thanks

 

[Goose]

Thanks for the responses, i think i'll just go with a regular old socket extension.