You may say the following depending upon your choices:

Willing to travel nationally.

Willing to travel internationally.

Willing to travel 50%, 70% etc. depending upon what you think the maximum percentage of your job time you can afford to travel.

Relocation is different and it again can be locally or internationally.

<em>Based on above examples you can compose a sentence of your own combining all your options. If you have any difficulty you are welcome to write to me.</em>

Thanks all for yours answers! I will choose " Willing to relocate and travel for business", It sounds better haha