ADJUSTABLE BRIGHTNESS: Color temperature toggle 20-250lm brightness adjustment, from dark to bright.can meet your needs.USB CHARGING: Can be placed dry battery use, can be USB charging use; It can output current to the outside world to charge the phone.WATERPROOFIP44 waterproof level, can deal with sudden outdoor light rain weather.PORTABLE: Weighing just 1.28 pounds, this lamp is lightweightwhich is portableand we will give you a colored cowhide box for easy carrying and storage.EXCELLENT AFTER-SALES SERVICE: We provide you with 1 year after-sales service, if your products in the use of the problem, we guarantee to give you a satisfactory reply.CELL BOX: Battery box cover can be opened, convenient to choose different types of batteries; Optional single 18650,1 to 2 sections, capacity can be selected according to their own conditions, recommended 2 2500mAh lithium battery; also optional AA battery 3. Try to choose the brand battery,AA battery used up as soon as possible, to prevent battery leakage solution, corrosion of the internal circuit, affect the life of the product.