Fisher & Paykel SleepStyle Auto CPAP Machine InfoUSB SmartStick TR15-8B The memory foam cushion is

The memory foam cushion is great for users who are sensitive to silicone cushions

will not move or leak and does not require headgear

functionality

You can use the concentrator's AC or DC power supply to charge the battery

it's one of the lightest units available

Fisher & Paykel SleepStyle Auto CPAP Machine InfoUSB SmartStick TR15-8B The memory foam cushion isThis InfoUSB SmartStick is designed exclusively for use with all F&P SleepStyle Auto CPAP Machines. It is the only USB SmartStick that should be used with SleepStyle devices. The SleepStyle InfoUSB SmartStick will store up to 5 years of summary efficacy data, 365 days of detailed efficacy data and 140 hours of high resolution pressure, leak and flow data.