1. look at the appearance , since the home course, to choose a fine , unique point ; in addition to lighting , but also pieces of art at home ah !

2 , look at welding, welding to be in prison . Each diode is connected in the circuit board by soldering , if the Weld a bad contact , it may cause the bulb does not light or affect the overall use .

3, watch batteries , regular batteries and lithium two kinds of lithium rechargeable battery , but the low life , about 2 years , LED life span of about 10 years , according to the actual situation to choose

4 , to see the brightness, good high brightness LED flashlight , the decay rate is slow .

5 , to see the light bulb, the bulb goes out to the naked eye is difficult to distinguish between its good and bad , to see the consistency of the light bulb lit .

6.Look waterproof , good LED flashlight with waterproof function , seismic performance, and the ruggedness . It belongs to the electronics, flashlights front of a circuit board , once the water prone to short-circuit, resulting in damage .

7 , aperture look good LED flashlight aperture for the uniform of a circle , poor LED flashlight beam is divided into yellow and blue two - color uneven distribution . The condenser side of the bulb as far as possible on one point . This flashlight unlike ordinary flashlight can adjust the focus , look out not to have astigmatism .