HIFU 4.0 features a basic handle and fewer probes, suitable for routine tightening and lifting. HIFU 5.0 maintains the same results but offers greater flexibility and more detailed handling, making it more geared towards professional use. For those with higher demands for delicate areas and multi-zone care, version 5.0 would be a better choice. 

HIFU 4.0 features a basic handle and fewer probes, suitable for routine tightening and lifting. HIFU 5.0 maintains the same results but offers greater flexibility and more detailed handling, making it more geared towards professional use. For those with higher demands for delicate areas and multi-zone care, version 5.0 would be a better choice.