Features 1、★ Well-made Stirling Engine Mode: The whole body is made of high quality metal, and CNC Aluminum alloy base with 4 anti-skid pads at the bottom of model machine, The fly wheel is made of metal, enhance the industrial texture. 2、★ Attractive LED Bulb: The flywheels will rotate rapidly, making the generator/u0027s Lamp bulb lighting. When the machine works, it will be very shocking and attracting eyeballs. 3、★ Easy to Play: No need to install any accessory, start to witness this conspicuous Science Experiment. 4、★ Great Educational : The glass tube and glass alcohol lamp easy to watch piston movement directly. The best choice gift for students, teachers, children, friends and colleagues. 5、★ Easy to Operate: Fill the alcohol burner with your 95% alcohol (we recommend this fuel) and light it. Let the light burn the round ended cylinder for about 30 seconds, then give the wheel a gentle push. Specification Features: ★ Well-made Stirling Engine Mode: The whole body is made of high quality metal, and CNC Aluminum alloy base with 4 anti-skid pads at the bottom of model machine, The fly wheel is made of metal, enhance the industrial texture. ★ Attractive LED Bulb: The flywheels will rotate rapidly, making the generator's Lamp bulb lighting. When the machine works, it will be very shocking and attracting eyeballs. ★ Easy to Play: No need to install any accessory, start to witness this conspicuous Science Experiment. ★ Great Educational : The glass tube and glass alcohol lamp easy to watch piston movement directly. The best choice gift for students, teachers, children, friends and colleagues. ★ Easy to Operate: Fill the alcohol burner with your 95% alcohol (we recommend this fuel) and light it. Let the light burn the round ended cylinder for about 30 seconds, then give the wheel a gentle push. Specification: Model: LL-006 Material: Aluminum alloy, glass Color: Silver/ Gold (Optional) Size: 17.5 x 9.5 x 11.5cm Weight: Approx 640g Fuel: 95% Alcohol Package Size: 19.5 x 11 x 15cm/7.7 x 4.3 x 5.9in Package Weight: 750g/26.5oz Packing List: 1 x Engine Model 1 x Spare Heating Glass Tube 1 x Alcohol Lamp Bottle 1 X 1M LED Bulb 1 x LED Bead 1 x 2M LED Light String 1 x English Instruction Manual Package List 1 x Engine Model 1 x Spare Heating Glass Tube 1 x Alcohol Lamp Bottle 1 X 1M LED Bulb 1 x LED Bead 1 x 2M LED Light String 1 x English Instruction Manual