Even with so many components provided, solid quality is definitely the 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 , family or children who are obsessed with electronic products. colour: as shown Material: metal Package Contents: 5 x yellow LEDs 5 x green LEDs 5 x red LEDs 1 x RGB LED 1 x thermistor 1 x tilt switch 2 x photoresistor 10 x Male to Male Cable 30 x 3 types of resistors 6 x push button switch 1 x potentiometer (10K) 1 x buzzer 1 x passive buzzer 1 x 1 x 1 Digit 7 Segment Display 1 x water level detection sensor module 1 x Sound Sensor Module 1 x Soil moisture sensor 1 x Obstacle Avoidance Module 1 x USB cable 1 x plate 1 x for R3 CH340 Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.