CONTENTS:1 manual,1 flashlight,1 21700 rechargeable lithium battery,1 USB-C cable,White light , Maximum white light brightness 4300 lumens,Maximum intensity 39600 cdMaximum beam distance 400mThe measurements of the lamp: 158 x 49mm.Brightness mode:4300/1500/450/150/10 lumens/Strobe/SOSRun time: 2/5/6/15/300hoursLED lifetime: 50,000 hours.Rechargeable lithium 21700 battery, 5000mAh.IPX8 protection level, under water 2 meters.Rechargeable: Can be charged easily. A charging port on the flashlight body. Memory function. Each time you turn on the light, it will get back to the mode which you turn off last timeOperation:Long press 1 second >>Power on >>Press to cycle through modesStrobe and SOS:At any mode, press for 3 second to activate strobe, then click again to enter SOS.Lock: When the lamp is off, double click to lock, it will flash 2 times. Double click to unlock.Please feel free to message us if you have any question, we will reply you quickly, thank you!