1>Aluminum profile 2>RGB controller available 3> 25cm. 50cm, 100cm ... IP65 waterproof, suitable for indoor and outdoor usageTechnical Specifications:Light sources: 25cm: 27pcs 5mm Through Hole LEDs; 50cm ... -6500K), warm white(2800-3300K), red, blue, green, RGB Lumen: 25cm: 175lm(cool white), 160m(warm white); 50cm ... Walkway Household, hotel, restaurant, entertainment places, etc. led strip light