Solar panel power 8W 6W 15W 15W 15W 6W 8W. 【Easy to Install】：Complete installation accessories are provided. You can install the solar panel with just 3 screws. Material Monocrystalline Silicon Monocrystalline Silicon Monocrystalline Silicon Monocrystalline Silicon Monocrystalline Silicon Monocrystalline Silicon Monocrystalline Silicon.