Is a used Fitbit Charge 5 worth it, or should I buy the Charge 6?

If you’re choosing between the two, the Charge 6 is usually the safer buy. It launched at $159, which was $20 less than the Charge 5’s launch price, so it’s not necessarily the more expensive option to get the newer model.

In general, the Charge 6 is the better pick if you want the newer device, longer-term support, and fewer risks from wear and tear. A used Charge 5 can still make sense if the price is much lower and the battery is in good shape, but used trackers can come with battery wear and other condition risks.

So: buy the Charge 6 unless you find a Charge 5 at a steep discount and are comfortable with the possibility of shorter remaining battery life. Exact pricing, battery condition, and feature availability can vary by seller and region, so it’s worth checking current listings and the official Fitbit/Google spec pages before buying.