The HidrateSpark Pro 24oz - Chug 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.