HIGH EFFICIENCY & HIGHER QUALITY YIELDS: VIPARSPECTRA XS4000 LED grow light adopts the latest high-quality LEDs technology-Samsung LM301B diodes, high energy efficiency with 2.7 umol/J, generates more usable lighting per watt and provides better light canopy penetration. OPTIMAL FULL SPECTRUM & FLEXIBLE DIMMIER: Consists of 3000K warm white, 5000K white, 660nm deep red, and 730nm IR light, which providing your plants with excellent full spectrum led grow lights. The red and IR light are particularly useful during bloom, which can speed up bloom time and enhance high yields to obtain the ideal harvest. An added dimmer knob is featured to manipulate the light intensity at liberty, provides desired needs for plants in all stages from veg to bloom. SILENT OPERATION & SOLID CONSTRUCTION: No fans zero noise. Large areas of solid aluminum heat sinks help you to achieve the ideal cooling system. Adopts high safety performance MEAN WELL HLG series driver to achieve high PAR output, longer lifespan to speed up plant's grow processes and boost yields while saving you on your energy bill. WORRY-FREE WARRANTY & FRIENDLY SERVICE: We provide 36-Month US Local warranty and 30-day money-back guarantee. Professional guidance, friendly customer service and US local after-sales service provides you with a pleasant shopping experience and helps your plants grow better. Make sure you purchase authentic VIPARSPECTRA grow lights. If you have any questions, please contact us at any time. HIGHLIGHTS Pure and clean silver look Industry-leading Samsung diodes MEAN WELL LED driver Up to 50% higher real power and at least 70% higher PAR outputs than other manufacturers PPE 2.7 µmol/J Sun-like full spectrum Including Infrared LED (IR) Built-in dimmer switch, 5% - 100% Silicone sealant conformal coating to waterproof LEDs Passive cooling with larger-surface heat sink Totally silent 30-day full refund and 3-year warranty SPECTRUM GRAPH SPECIFICATIONS Dimensions 39.7'' x 11.8'' x 3.0'' Item Weight 16.43 pounds LED Chips 1008 top-quality LEDs, including 632 Samsung 3000K warm white LEDs 320 Samsung 5000K white LEDs 52 660nm deep red LEDs 4 730nm IR LEDs Vegging Coverage 5' x 5' @ 28'' Flowering Coverage 4' x 4' @ 24'' Real Power 120 V: 480 watts ± 3% Input Voltage AC 100-240 V Input Frequency 50-60 Hz Cooling Mode Passive cooling Noise Level 0 dB Lifespan ≥ 100,000 hours Operating Temperature -4 ºF - 104 ºF Package Weight 28.11 pounds Package Content XS4000, user manual, 6-foot power cord and hanging kit PRODUCT DETAILS