Create professional-quality media in your grow room with the Catalyst Phone Clip Photo Filter. The Catalyst clips securely to your cell phone or tablet, balancing the color spectrum with a high-quality Carl Zeiss lens for insane optical clarity when used under MAGENTA, RED, or PINK spectrum LED grow lights. The filter screw mount is a 37mm aluminum alloy ring and can be removed and adapted for security cameras. Made from aircraft-grade high-temperature injected polymer for durability. Ships with a $20 Gift Card towards any Method Seven pair of glasses with a $50 value or greater*. Crazy, right?! - True story. This lens is not for use on full/ white spectrum LED lights; it is made for magenta, red, or pink spectrum LED lights. Create professional-quality media in your grow room with the Catalyst Phone Clip Photo Filter. The Catalyst clips securely to your cell phone or tablet, balancing the color spectrum with a high-quality Carl Zeiss lens for insane optical clarity when used under HPS (High Pressure Sodium) lights. The filter screw mount is a 37mm aluminum alloy ring and can be removed and adapted for security cameras. Made from aircraft-grade high-temperature injected polymer for durability. Ships with a $20 Gift Card towards any Method Seven pair of glasses with a $50 value or greater*. Crazy, right?! - True story. *Limit 1 $20 gift card use per customer, cannot be combined with any other sales, coupons, or discount promotions https://www.youtube.com/watch?v=4Se64oAUf5I