ExdIICT4 protective shell explosion signs : Certificate Number : Ex grade : IP56 NLE05276 its patent applications : Ex-level lighting products on the 200530130132.8 Supervision and Inspection Station check. Power source : DC : DC7.2V2A/0.5A 7.2V8Ah equipped with special battery charger recharging time, "10h product characteristics : high reliability of the lamps, portable, Jiankua, citing fire. Long range lighting, intense use of the time 2 hours, 13 hours or more time is the use of low light. Equipped with imported energy batteries, cell cycle number 100 or so. After six months of using the full power available for normal use.