EQKIT DIY Electronic Hourglass Kit Soldering Practice Spare Parts Module

Feature: ? Model: EH-30 Working voltage: DC3.3-5V or 3*AA battery Speed: Adjustable PCB size: 74.4 x 43.7 x 24mm
Color: Red LED ? Package includes: ? 1 x DIY Electronic Hourglass Kit

Finish assembly, for reference only.