1Low Power Consumption: Using sophisticated production technology, the metal halide lamp has a long service life and low power consumption. 2High Output Luminous Flux: The metal halide lamp has high output luminous flux, excellent performance, and can be used for a long time. 3Function: Can stimulate the growth of plants, suitable for fast growing plants, greatly accelerate the growth of flowers and fruits. 4Operation: Wait 3 to 5 minutes to get full brightness, wait at least 5 minutes after turning off the power, and then restart. 5Scope of Application: Made of high quality glass and aluminum alloy, suitable for tying branches of grapes, tomatoes, etc. Item Type: Metal Halide Lamp Material: Glass, Aluminum Alloy Product Power: 400W Product Voltage: 110V to 240V Lamp Holder Specifications: E39 Service Life: 20000h Color Temperature: 4200k Color Rendering Index: 65Ra Scope of Application: Tying Branches of Grapes, Tomatoes, Etc. Weight: Approx. 260g / 9.2oz 1 xMetalHalideLampThe lamp must be matched with the ballast of the corresponding specification, and the bulb and ballast cannot be used arbitrarily