First impression - the filtered water tastes smoother and lighter after inside the bottle for more than 10 minutes compared to normal filtered water. I tested the hot water poured inside the bottle which lasted 15 hours - still hot (better than advertised up to 12 hours hot). The laser engraving of the unique selective circuit on the bottle is permanent. The engraved circuit on the bottle is similar in principle to the Thun-ImmanU Veca Code (11:11)- a scalar flame carrier that interfaces directly with liquid fields such as water. It supports the restructuring of water, restoring life force and harmonic flow through your body (adult 60% water) and space.