There is various sorts of different kind of flashlight for civil, army, police, search rescuein, spelunk in the market. And price is very different for different usage and producing technic. How to choose a suitable flashlight for our work? The follows is some useful information for your reference.
      
          1.Civil flashlight
          Firstly, we must think about the practicability. Second, is the usage cost. Most of the civil flashlight use alkaline battery #1, #2, #5 and #7. This kind of battery is very easy to buy from the market and it is very cheep. So if you are buying a civil flashlight, alkaline battery flashlight is your first choice. 
     
          2.Professional ourtdoor flashlight
          We must think about the weight and the size firstly, then the luminosity and the lasting time. Outdoor sporter is the main customer of this kind of flashlight. So we should choose small and portable one, luminosity more than 80LM, effective distance more than 100m and make by horniness aluminium would be much better. # CR123A lithium battery and #18650 rechargeable lithium battery are the best choice for this kind of flashlight.
      
          3.Police flashlight
          Firstly, we should think of the function, then the luminosity, lasting time, water resistance, shock resistance and aggressivity. It’s better make by horniness aluminium, luminosity more than 130ML, effective distance more than 150m, must have recharge socket on the flashlight, and equip with vehicle charger. #18650 rechargeable lithium battery are the best choice for this kind of flashlight.
     
          4.Military flashlight
          We should think about the function first, and then the luminosity, lasting time, water resistance and shock resistance. It’s better make by horniness aluminium, luminosity more than 80ML, effective distance more than 100m. For military flashlight, it must can be switched between powerful light and dim light, must have two or above two color and strobe SOS function to meet the requirement of outdoor working in threatening environment. #18650 rechargeable lithium battery are the best choice for this kind of flashlight.
      
          Apart from this, we use different flashlight in different field. But we must know clearly in what kind of condition we will use the flashlight, and choose the one that have suitable functions for it.