Panasonic RX-DT680 Belt Model Numbers

Hey everyone, new guy here. I see a lot of old posts on belts for the Rx-DT680 but does anyone have actual model numbers? I have looked at the Russell parts list along with a few others and it does not list the 680 model. Only the DT-690 is listed which might have same belts but odd that nowhere is there a part/model number listing to start a cross reference.
Thanks

The 680 and 690 use the same AR300 deck mechanism. Use two FR8.2 belts and two OA5.4 belts

Thank You, for the reply and link for the actual parts. Funny though how the 680 not being listed. I used to own a large Appliance and Electronics retail stores and Panasonic was one of our main brands. The 680 outsold the 690 back then for us because of the look and the micro switch design. I which I would have saved a few of some of the earlier true boombox models or as we called them BFR’s.