Chosen Solution

When I was using my headphones for several days , it got loose from the left and right junction so I always had to use it while twisting it in different angles so that it worked. But yesterday when i was twisting , it suddenly came out from the splitter and i don’t know how to open it. It does not have screws or anything. Sorry for bad english

The best thing you can do, is attempt to reattach the two wires from the headphone with the splitter . This probably won’t work very well, but it may be worth trying, if they are a good pair of headphones