The HidrateSpark Pro 24oz – Straw Lid has an LED smart sensor puck that glows to remind you when it’s time to drink and tracks your water intake by syncing via Bluetooth to the free HidrateSpark 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 App. This BPA-free, lightweight Tritan plastic bottle is shatter and odor resistant. to hand wash only. Do not submerge, wash or get the sensor wet. Do not use product with hot liquids.