10pcs 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: 10 x Plastic housing 10 x PCB board 10 x 8*8 self-locking switch 10 x 7mm self-locking switch cap 10 x Single wire 5CM 10 x 8550 transistor 10 x 8050 triode 10 x 5MM Straw Hat LED 10 x 330UH inductor 10 x 102 ceramic capacitor 10 x 510 ohm resistor 10 x 20K resistance 10 x Battery positive piece 10 x Battery negative piece