The HidrateSpark Steel is a vacuum-insulated stainless steel bottle that keeps drinks cold for up to 24 hours. The smart LED sensor puck lights up to remind you to drink and tracks your water intake by synchronising via Bluetooth with the HidrateSpark app. The sensor puck can be customised by light pattern and colour. It tracks your water intake and synchronises it via Bluetooth with the free HidrateSpark app. The rechargeable battery comes with a quick charge cable. The bottle is stainless steel and vacuum insulated to keep drinks cold for up to 24 hours and is BPA free. A protective spout cover and latch keep dirt and germs out and prevent spills. Accuracy has been proven by Mayo Clinic clinical studies within 3% of manual readings. A carrying strap makes it easy to take with you. The bottle and lid are dishwasher safe, the sensor puck can be cleaned with a damp cloth.