niceEshop(TM) E27 5w 12v Energy Saving High,Power Bright White LED Light Lamp Bulb Case material:Brand new and high quality aluminum Equipped with cooling systems,constant current drive power Seismic,impact resistance,non-thermal radiation,safe and stable,reliable Suitable for home,office and exhibition lighting Size: 12x6x3cm/4.7x2.4x1.2inches