Features:brand new and high qualityUnsolderedThis is an Electronic DIY Kit that uses the NE555, some welding experience is requiredAll necessary electronic parts are provided, please see the pictures for more detailsThe for image is for illustration purposes only Specifications:Chip Model Number : NE555Operating Voltage: for DC 4-7VSpeaker: 8 OHMs 0.25WPCB Board Size: 28x24mm/1.1x0.94"Quantity: 1 Set Note:Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bidDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youNo Retail PackagePackage Contents:1 x PCB Board1 x Speaker2 x 100mm RED Line2 x 100mm Black Line1 x NE555 Chip1 x 8 Pin IC1 x 100UF 25V Capacitor1 x 10UF 25V Capacitor1 x 6x6x5 Button Switch3 x 103 Ceramic Capacitor5 x 47KR Metal Film Resistor2 x IN4148