HOW DOES IT WORK? Simply drop & lock your charcoal into the bottle. Fill with drinking (potable) tap water. Wait for the charcoal to filter chemicals from the water overnight is ideal, but you will taste the difference after just one hour). Then, enjoy great tasting water! HOW LONG WILL IT LAST? If you are using your Binchotan with our ‘eau good’ bottle and fill it up once a day, then it should last three months. You are then able to recharge it by boiling it in water for ten minutes and then leaving to dry in sunlight. You should be able to keep recharging it for a further three months. Specifications •It makes tap water taste great! •BPA free tritan, cork, stainless steel, silicon •Includes x1 binchotan active charcoal filter (6 months life) •W 8.5cm H 24cm / W 3.3″ H 9.4″ •800 ml 27 floz