New Delhi, July 16 -- Many people hope to recover some of their tech spend by selling used electronics, but some gadgets lose value astonishingly fast. Even if you keep them in perfect condition, a steep resale drop is almost impossible to avoid for certain categories, thanks to frequent product launches, changing software, and limited resale demand. If holding onto value matters to you, these are the main types to approach with caution.

Earbuds like the AirPods and other truly wireless models are notorious for losing value within months. Most have sealed batteries that degrade quickly, and hygiene concerns make buyers wary of used pairs. Software updates and new generations come thick and fast, further undercutting resale prices.

Weara...