Purpawse Premium Hydrogen Water Bottle utilizes advanced SPE and PEM technology to deliver a high concentration of up to 6000 PPB of pure hydrogen. This compact 7.7 oz bottle is crafted from BPA-free food-grade material, specifically chosen to handle high hydrogen pressure safely. It features a real-time OLED display indicator, UV light technology, and a long-lasting battery that provides up to 6 hours of use on a single charge. Designed with a leak-proof, air-tight seal, this portable ionizer creates visible hydrogen bubbles to help elevate your daily wellness routine. Measurements: • Capacity: 7.7oz (approx. 230ml)