Here is a pair of smart dumbbells that you can adjust with Alexa voice commands. The NordicTrack 50lb iSelect Adjustable Dumbbells combine with iFit to give you fun training every day. They can replace 20 individual dumbbells. The LED display shows the current weight conveniently.
These dumbbells come with a storage tray that has an integrated tablet holder and smooth weight selection dial for manual adjustment. Owners can ask Alexa to set weight to a specific amount, increase/decrease weight, and set weight presets for specific exercises.