Description:  Item Name: Stirling Engine Model;  Speed: About 2000 rpm (95% alcohol fuel);  Weight: About 365g.     Feature:  Low current.  Large range and strong power.  Energy saving and power saving.  Good quality.  Easy operation.     Note:  -There will be the operation of steam,when the steam too much time, the engine will stop working, inside and outside the needle oftens set aside to reduce friction.  -Do not rotate the nut too tightly, otherwise the glass is broken, if the piston is cracked, can be bonded with glue.  -The alcohol lamp wick do not touch the glass, do not get too tight ring.  -Pulling the piston connecting rod can not force the front end, because the front end is easy to break.  -The alcohol is not included.  -This need your assembly.     Package Included:  1x Stirling Engine Model.