Dc mode 2x8w/t5 fluorescent tubes or 30 led light Emergency & automatic light-up Handle/wall mounting Single or double tubes Built-in 6v4ah lead-acid battery Full change: approx.24hours Duration: approx.3hours/2 tubes; 6hours/1 tube Product size: 9x8x42cm, 1198g weight Packing: color box, 43.5x34.5x30cm/12pcs, 16.4/14.4kgs, 7000pcs/20f+