Material: Crystal， Acrylic， Stainless SteelWorking Voltage: 100-240VWattage: 5WNetweight: 450 gSize: φ 20cm，Height 7cmPackage size: 25*25*15 cm Installation: Both surfaced installation or concealed installation are OK， but concealed installation needs to open a hole φ 10.5cm.Light Color: Mainly warm white， with colorful lights Package contents:1 x LED ceiling lamp