HidrateSpark Steel 17oz Straw Lid has an LED Smart Sensor that glows to remind you when it’s time to drink and tracks your water intake by Bluetooth® sync to the free smartphone app. It features a rechargeable battery and includes a charging cable. Customize the bottle by choosing between unique glow colors and exciting light patterns available within the HidrateSpark app. Improve your health and wellness with a bottle that fits your lifestyle This BPA-free, vacuum insulated stainless steel bottle is designed to keep beverages cold for up to 24 hours great for Employee Wellness programs . The double-wall construction prevents condensation. Recommended to hand wash only. Do not submerge, wash or get the sensor wet. Do not use product with hot liquids.