This pack contains the following material: 

• 1 x NXT Intelligent Brick
• 3 x Servomotors
• 1 x ultrasonic sensor
• 1 x light sensor
• 1 x sound sensor
• 2 x touch sensors
• 431 x Lego Technic pieces
• Compartmentalized plastic box with trays
• Rechargeable lithium battery
• Battery Charger
• CD with Software NXT-G education
• Robot Educator (see video explaining the product 9797)
• 3 lamps
• 3 NXT to RCX converter cables 

It is recommended for schools (from schools, from 8 years to university) and, in general, you are always going to have an intensive use.