A2 Light Box Light Pad Aluminium Frame Super Thin 6mm Touch Lock/unlock Dimmer B. High Quality Aluminum Sturdy Structure and Powerful Led light Improve LED light efficiency to Lower the Aluminum frame Temperature, Single led efficiency Reach to 210Lm/W, light pad temperature goes down, Brightness goes up 20% Ideal for Diamond Painting, Comic, Sketching, Tattoo Transferring, Sewing project, etc Lock / unlock mode: Press dimmer up and dimmer down at the same time, hold for 3 seconds, light pad flash one time, it shows lock/unlock modes |