Gobutobu OP t1_j62ozbw wrote on January 27, 2023 at 7:39 AM

Reply to comment by KilgoretheTrout55 in Used Sony WF-1000XM3 for $45. Good or not? by Gobutobu

It is functional but batteries have been replaced. That's why I think backup is low. It's more than 2 years old that's why maybe cheap. It is not refurbished. it's price touched $86 during an amazon sale recently. I was stupid enough to miss it. But this person purchased it in December 2020. Also maybe he is the 2nd buyer as he has blurred out shipping address on Amazon invoice.

AmirZ t1_j64e6mw wrote on January 27, 2023 at 5:08 PM

Just FYI, the term "battery backup" sounds weird in English, it means you have a spare battery. The proper phrasing in English is "battery life", which means how long can you use the device until the battery runs out (and "dies", until the next charge).