5MM LED Flashlight Convenient Light Kit Simple LED Boost Drive DIY Electronic Kit

Feature: Shell size: 55 x 35 x 15mm PCB board size: 5 x 2 x 1mm Operating voltage: 1.5V (AAA battery) Kit weight: 17 grams Note: This is a DIY kit, you need to assemble it. Package includes: 1 x Plastic housing 1 x PCB board 1 x 8*8 self-locking switch 1 x 7mm self-locking switch cap 1 x Single wire 5CM 1 x 8550 transistor 1 x 8050 triode 1 x 5MM Straw Hat LED 1 x 330UH inductor 1 x 102 ceramic capacitor 1 x 510 ohm resistor 1 x 20K resistance 1 x Battery positive piece 1 x Battery negative piece