If you are looking to purchase one today, here is the best way to go about it:
These resale apps frequently have older fitness trackers listed by individual sellers.
Since these devices are several years old, the internal lithium-polymer battery may have degraded. If buying used, ask the seller how long a single charge lasts.
The silicone clip is prone to tearing over time. Ensure the listing includes the silicone holder , or check if you can find a replacement clip online separately.
If you want the "clip-on" style without the risks of buying a discontinued device, consider the . While it is designed as a wristband, Fitbit sells an official Clip Accessory that allows you to wear it on your belt or pocket just like the original One.
The Fitbit One still works with the current Fitbit app , but you may need the original USB charging cable and potentially a Bluetooth-enabled smartphone to set it up. Modern Alternatives