Updated Bullets: • Ideal environment for starting your seeds and cuttings by providing your plants with gentle warmth and controlled humidity • UL-listed waterproof heat mat runs at 17 watts， 120 volts • 7-inch humidity dome for controlled humidity and optimum growth • 11 x 22-inch watertight base tray for less leaking • Includes heat mat， humidity dome， watertight tray， and 72-cell seed insert • 72-cell seedling insert allows you to start plenty of plants at once • Stronger， healthier seedlings because they’ll have everything they need • Increased germination success with the ideal temperature ranges • UL listed • Wattage: 17 watts • Voltage: 120 volts • Product/item type: Germination kit • Material: Plastic • Color: Black • Dimensions (L x W x H): 22.3 x 11.7 x 6.8 inches • Weight 2.5 pounds