Low Costs & High Efficiency: VIivosun VS4000 LED grow light uses full-spectrum diodes & brand driver for high energy efficiency with 2.9 μmol/J; Extremely high output but consumes only 400W of electricity. It can cover 4x4ft. area (5x5ft. max)Convenient Dimmable Lights: This LED grow light has a dimming knob & ballast, so it adapts to different plant growth stages by adjusting its output from 25% to 100%Sunlike Full-Spectrum Light: These VS4000 LEDs deliver the optimal full-spectrum coverage and power needed by your plants at all growth stages, supporting efficient photosynthesis for plantsLow Noise & Low Heat: VS4000 LED grow lights have a power supply and ventilation holes; No fans needed means low noise; Ambient heat around this light is very low, so there are no burns or damage to your plantsWarranty: Super durable and reusable; Comes with a pair of Vivosun US-patented rope hangers & 5-year after-sales service
