- 400W VIVOSUN HPS bulb compatible with electronic and magnetic ballasts, 55000 Lumens, E39 Base.
- Optimized 2100K red & orange spectrum and high PAR (Photosynthetic Active Radiation) to stimulate flower growth and enhance fruiting.
- Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5,000 hours.
- Startup Time: allow 2-3 mins for full bright. After power off, do please wait at least 5 mins before striking again.
- Lifetime: 24,000 hours.
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