Sunday 27 August 2017 05:25, UK
Even if you are not a Sky TV customer, you can watch the unique event between Floyd Mayweather and Conor McGregor.
The two sporting icons meet at the T-Mobile Arena, Las Vegas, on Saturday night, with Mayweather looking to go 50-0 and McGregor making his boxing debut.
The packed undercard sees Welsh warrior Nathan Cleverly defend his world title against Team Mayweather's Badou Jack and Gervonta Davis putting his world title on the line, too.
With Sky Sports Box Office you can watch all the fights live via your PC/Desktop/MAC, NOW TV box, iPhone, iPad, Android phone or Android tablet.
It's simple to sign up, pay and watch.
First of all, create an account and pay at www.skysports.com/boxofficelive.
Once paid, you can then select which online device you want to watch the fight on by using the same login details you created at sign up (i.e e-mail address and password).
Note: you will only be able to view on one platform at any one time.
Read our FAQs for all you need to know about Sky Sports Box Office Streaming, and how to book.
You can also watch Mayweather vs McGregor live with Sky Sports Box Office through your NOW TV Box.
To watch Sky Sports Box Office events on your TV you just need to order online at www.skysports.com/boxofficelive and then download the app on your NOW TV Box.
Of course, there is one other way that you can watch if you aren't a Sky TV customer.
Watch it with your friends in your local Sky Sports pub.
Speak to your local Sky Sports venue to find out about watching the event there. Go to pubfinder.sky.com for more information.
