The smart water bottle that tracks your water intake and lights up to remind you to drink through the FREE Hidrate App powered by Bluetooth. The soft-grip body makes it easy to keep your HidrateSpark 3 water bottle in hand while on the go. Choose from 3 glow modes for extra motivation every day. Pairs with most smartwatches, including Apple, Fitbit, Garmin and Withings.20 ounces. Tracks every sip & syncs to the free Hidrate App, powered by Bluetooth Low Energy. Soft grip body to improve grip and minimize condensation. Choose from 3 glow modes to match your needs/motivation. Syncs with most fitness apps to adjust goal accordingly. Comes with either a red sensor stick or a green sensor stick. Black, Royal Blue, Scuba and Storm bottles glow green. Coral, Berry and White bottles glow red. 1 Color Imprint.