It is the top of the range model as it has three inflation sequences including the sequential program. This program inflates the first chamber of the accessory and then the others, until the complete compression of the whole limb is reached. This type of sequence is particularly recommended by doctors for those who suffer from edema and lymphedema. The G-300 model is available in different configurations depending on which and how many accessories you want to use. The complete list of configurations is available in the data sheet. It is recommended to consult a doctor before the use.