1)With rectangular shape, it is much suitable for the row of the land. Better efficiency as it is strong enough light to plants 2)Lifetime reaches 50,000 hours. 3)90X 1w led grow light produce great effect as 400W to 600W HID grow light save 75%-- 85% on electricity. 4)Built-in cooling system (thermostatically controlled fans ) solve the heat dissipation excellently 5)Built-in power supply, CE approved, No setup required, just simpler and safer plugs directly into AC120V/220V, no reflector & ballast needed. 6)Environment-friendly: Don¡®t contain the harmful substance HPS & MH have, much less hazardous waste to deal with. 7)Ideal for all phases of plant growth, and works well with any indoor garden, whether hydroponics or soil based. 8)Now red light available with different wavelength, Red is good for flowering, budding and blue is good for vegetative. 9)The lighting area and height above the plant can be changed according to different plants and environment, technical parameters also. 10)Includes a wire hanging kit for easy installation! 11)you can choose the wavelength and color ratio which is most suitable for your plant growth.