Description: 100% new and high quality Material: plastic, metal Color: see picture Size: Box length 19cm/7.48in, width 9cm/3.5in Package includes: 1 set of electronic components with box 1 x Power supply (Warning: Do not use voltage higher than 9V) 1 x 830-hole breadboard 1 x 65pcs starter wire 1 x 140 pcs solderless jumper wire 1 x 20pin female to male Dupont wire 2 x pin header (40 pin) 1 x precision potentiometer 2 x photoresistors 1 x thermistor 5 x diode rectifiers (1N4007) 5 x NPN transistors (PN2222) 1 x IC 4N35 1 x IC 74HC595 1 x active buzzer 1 x passive buzzer 10 x switch (small) 10 x 22pf ceramic capacitors 10 x 104 ceramic capacitors 5 x electrolytic capacitors 5 x electrolytic capacitors 10 x white LEDs 10 x yellow LEDs 10 x blue LEDs 10 x green LEDs 10 x red LEDs 1 x RGB LED 10 x resistors (10R) 10 x resistors (100R) 10 x resistors (220R) 10 x resistors (330R) 10 x resistors (1K) 10 x resistors (2K) 10 x resistors (5K1) 10 x resistors (10K) 10 x resistors (100K) 10 x resistors (1M) Note: 1. Please allow 5-10mm differences due to manual measurement, thank you. 2. The actual color of the product may differ slightly from the picture, and the website is caused by various factors such as monitor brightness and light brightness.