Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Innovative and Sustainable Pool Water Solution: Maintain pool water quality in an eco-friendly way with the 4CH4002-R Ionizer Replacement Chamber. Using a natural ionization process, it keeps your pool clear without relying on harsh chemicals like chlorine.This sustainable solution not only maintains water quality but also reduces maintenance costs, making it a for pool owners seeking a healthier, more natural swimming experience Easy to Install and Maintain: Forget complicated installations! The 4CH4002-R ionization chamber features a user-friendly design that allows for quick and easy installation. With the included step-by-step instructions, you can install it without professional assistance. Plus, its low-maintenance design means there's no need to worry about upkeep, allowing you to focus on enjoying your pool, not maintaining it Product Features: The replacement chamber in use releases copper and silver minerals to clean your pool. This significantly reduce the use of chemicals. Reduce the health effects of harmful substances. Keep your pool clean while keeping swimmers healthy and safe Complete Water Purification: Say goodbye to harmful contaminants with the 4CH4002-R ionization chamber. Designed to neutralize algae, ensuring your pool stays fresh and hygienic. The ionization process creates a protective barrier against impurities, greatly reducing the need for chlorine. Color: black Material: ABS+copper Package Contents: 2 x 4ch4002r replacement chamber Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.