• Optimized spectrum: Dural spectrum and high PAR (Photosynthetic Active Radiation) to promote healthy plant growth in vegetative or flowering stages;
• Long lifetime: Lifetime as long as 24,000 hours, maintaining over 90% of initial lumen (51000LM) output after running for 5,000 hours;
• Wide application range: with more energy in yellow and red spectrum to enhance flowering, these horticultural high pressure sodium lamps can be better used in plant flowering;
• HPS bulbs can be compatible with both electronic and magnetic ballasts;
• What you get: Friendly customer service and 1x E40 400W HPS grow light bulbs with optimized spectrum;(See more detailed specifications from product description/Band may be various)

Product Description

Size:400W

Specifications: 
Lumens:250w - 31,000lm; 400w - 51,000lm;600w - 90,000lm; 1000w - 140,000lm; 
Color Temp: 2,100k 
CRI: Color Rendering Index: 250w - 24Ra; 400w - 24Ra;600w - 22Ra; 1000w - 25Ra; 
Rated Life: 24,000 hrs 
Base Type: E40 
Bulb Shape: 250w/400w/600w -- T46;1,000w -- ET25 
Features: 
1. This Super HPS grow lamp allows you to stretch your growing season to 365 days a year. 
2. Fine-tune your lighting system to provide optimum spectral energy levels that promote vigorous plant growth. 
3. Super HPS grow lamps provide up to 15% more available energy for plant growth than the standard high pressure sodium lamp. 
4. Super HPS grow lamp's enhanced spectral energy distribution is designed to grow a wider variety of plants. 
Package Contains: 1 x HPS grow light lamp 
Our HPS bulbs can be compatible with both electronic and magnetic ballasts! GWELL grow light bulbs ---have both Blue spectum (Growth Stage) and Red Spectrum (Flowering Stage)-- a better growing for you plants! 

Our service goal: 100% customer satisfaction, so we insist to provide high quality products and ensure an enjoyable online shopping experience for our customers. Please contact us if you have any problems, our friendly and helpful customer service centre is always here for you.