Even with so many components provided, solid quality is definitely the most important for a kit. The kit is suitable for those who want to learn programming and more to embark on the first step of the electronic journey. Perfect choice and gift for friends, family or children who are obsessed with electronic products. colour: as shown Material: metal Package Contents: 25 x yellow LEDs 25 x green LEDs 25 x red LEDs 5 x RGB LED 5 x thermistor 5 x tilt switch 10 x photoresistor 50 x Male to Male Cable 150 x 3 types of resistors 5 x 6 x push button switch 5 x potentiometer (10K) 5 x active buzzer 5 x passive buzzer 5 x 5 x 1 Digit 7 Segment Display 5 x water level detection sensor module 5 x Sound Sensor Module 5 x Soil moisture sensor 5 x Obstacle Avoidance Module 5 x USB cable 5 x plate 5 x for R3 CH340 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.