We design our LED growth light with 3 different wave light. We compact our design with having 2 rows of LEDs chips within e same space, allowing therefore stronger lighting output per unit area.Comes in 2’ (60cm) @$36 and 3’ (90cm) @$52Solar C : simulating natural sunlightSuitable for most plants, with general applicationViolet B : more towards e blue wavelengthWavelength peak and coincide with chlorophyll A that simulated growth and foliage development.Using it with young seedlings will promote healthy roots and leaves.Pinky R : more towards the red wavelength Wavelength matches chlorophyll B, with objective is to encourage flowering of plants.Great for stimulating the red pigments in some succulent plants, red lettuce, etc.Come with a 2m length cable with On/Off switch.You might need also:- lamp clip holder @ $8- inter-lamp cable @ $5