A Hydration Tracking Bottle Holder is a smart accessory that helps you keep track of your daily water intake. It is often paired with a water bottle or attached to one. It works by either measuring how much water you drink or reminding you to take regular sips. Some holders come with built-in sensors, while others rely on manual tracking. Most of them connect to your smartphone via Bluetooth or have a simple tracking mechanism like colored bands or timers. The main purpose is to help you drink the right amount of water throughout the day without forgetting.