size :9*5.5*18cm                        
material ： ABS (according to CE standard)    
two working methods : refrigeration and the fan modes use way: wetted the sponge,put it  into the open air conditioning, open the air-condition, makeing cool  wind, taking out  sponge, will not have a cold wind,  a sponge can reusing （ can be mixed essences to keep the sweet smell  ）    power form:
1.LI-NH battery inside,can be charged repeat                      
2. USB interfaces,the power supply direct