| Fabric electrode | Traditional metal electrode | Patch electrode | Needle electrode |
Conductive medium | Inert metal and chlorine | Inert metal | Patch electrode | Metal |
Time-using | Long | Short | Short | Short |
Skin allergy | No | Yes | Yes | No |
Skin damaging | No | No | No | Yes |
Comfort level | High | Normal | Normal | Feel painful |
Operability | High | High | High | Low |