Siri Remote with Apple 4k

siri remotes was introduced with appletv hd and used with appletv 4k first generation and then replaced by the new siri remote

here is how the 2 of them look

https://help.apple.com/assets/63938FA788F57B7F8F23639D/63938FAB88F57B7F8F2363A7/en_US/0cafead10f9cf93e93c26496e63d276a.png

they can all be used with all the same appletv models so HD 4K 1g, 2g and 3g

One Siri Remote can be used with Apple TV (4th generation or later). Other IR remotes or software remotes can be used simultaneously.