The Nix Hydration Biosensor is a wearable sweat monitor designed to help runners and other endurance athletes understand how much fluid and electrolytes they lose during training. A lightweight rechargeable pod clips into a single-use patch worn on the arm, then sends measurements to the Nix app and compatible devices while you exercise. The system is most useful for sustained, sweaty sessions rather than everyday activity: Nix recommends workouts of at least 45 minutes and the sensor needs active sweating to produce data.
The starter package includes one pod, four sweat patches, a charging case and USB cable. Nix lists the pod at under 0.5 oz (about 14 g) and quotes up to 36 hours of battery life. Each patch is disposable, so ongoing consumable cost should be considered before purchase. The readings can support a more individual hydration plan, but they are training guidance rather than a medical diagnosis, and needs will vary with conditions and effort. This entry covers the current Nix Hydration Biosensor hardware; patch quantities and bundles are not separate products.
