Dc mode 2x6w/t5 fluorescent tube or 21 led light Emergency & automatic light-up Handle/wall mounting Built-in 6v4ah lead-acid battery Full change: approx.24hours Duration: approx.3.5hours/2 tubes; 6hours/1 tube Product size: 9x8x30cm, 851g weight Packing: color box, 43x31.5x38cm/20pcs, 19/17kgs, 10000pcs/20