RTFM

Someone gave me this pair of bluetooth headphones, which I was able to "fix" and start using with a few minutes of effort. Today, a few months later, I accidentally activated the redial function (at almost midnight - not even sure who I just called! 😨). It took a good 20 minutes to find the manual online, and it seems the headphones actually have 4 unmarked buttons, and each of them have multiple functions depending on the duration/number of presses! The manufacturer was really expecting their customers to RTFM 😂

PS: after having read the manual end-to-end (no feat, given it's all of 4 pages) it turns out there is absolutely no indication of which side is right and left either, so even RTFM doesn't help 😏