Every Drop Counts Sonar technology measures the change in fluid level in your bottle to a fraction of an ounce so you know your precise intake. Works for any fluid, not just water. Fits Like A Champ Versatile design fits onto many standard wide-mouth water bottles (including Nalgene, Hydro Flask and Camelbak) so you can twist on and roll out to wherever the next adventures takes you. Integrate To Elevate Seamless technology syncs real-time data between your fitness devices and your Trago app so you can see hydration’s impact throughout your life. Connects to Apple Healthkit, UA Record, Fitbit, and Google Fit. Always On 6-month life on a standard easy-to-replace coin cell battery means you can hydrate day and night and far from home, for less hassle and more hydration. Features: Bottle Size: 20 oz/600 ml Insulated Stainless Steel Bottle: BPA Free Keeps drinks cold for 24 hours, hot for 6 hours Fits in most cup holders Long Battery Life: Trago runs for 6 months on one CR 2032 coin cell battery Cap Fits Many Wide-Mouth Bottles: The Trago Cap fits many standard wide-mouth (63mm) water bottles such as Camelbak, Nalgene, and Hydro-Flask. Leak Proof: The Trago Smart Bottle is designed with athletes in mind and will never leak in your back-pack or gym bag, or anywhere else for that matter! Patented Technology: Trago uses patented sonar technology to measure fluid consumption. This means no probes or dipsticks in your bottle, and the most accurate measurements on the market. Specifications: Bottle Measurements: Bottle Height: 9 in Easy to grip and fits most cup-holders Cap Measurements: Cap Height: 2.5 in Cap Width: 2.9 in at base Cap Lights: Used for informing the user experience Hydration Capacity: 20 oz / 0.6 L Weight: Trago Cap: 3 oz Vacuum Insulated Stainless Steel Bottle: 10.6 oz Sensors: Ultrasonic sensors 3-axis accelerometer Environmental Requirements: Operating temperature: 20°F to 120°F Battery: Average battery life is 6 months. Battery life varies with use, settings and other factors. Battery type: CR2032 Lithium 3V Care: The Trago Cap should be hand washed under the sink and not in the dishwasher! The stainless steel vacuum insulated bottle should also be hand washed. Materials: Trago Cap is constructed of UV resistant Polypropylene. BPA free. Vacuum insulated bottle is made from food-grade stainless steel. Syncing: Trago Cap uses Bluetooth low energy to communicate with the Trago App.