Transcend Micro Auto Travel CPAP MachineTranscend Micro is the smallest and lightest Auto CPAP machine available, weighing in at less than half a pound and fitting comfortably in the palm of your hand. Transcend Micro is loaded with quality comfort options such as auto adjusting pressure, an adjustable ramp, expiratory pressure relief, silent operation, and optional extras like HME humidification and a battery pack. It's also compatible with just about any CPAP mask, making it an easy fit