Hydration management bottle with Bluetooth. - Brand: HidrateSpark - Model Name: PRO STEEL - Color: Black - Bluetooth: Yes - Included: Charging cable - Features: Hydration tracking app integration - Features: LED light display 946ml Thank you for viewing. This bottle connects to your smartphone to track your hydration. The light color and patterns are customizable. It's convenient because you can record how much you drink, set goals, and the light prompts you to hydrate at pre-set times. There are no noticeable scratches, but please understand that this is a used item. Functionality has been confirmed before packaging.