:product description: * Lightweight and compact design, perfect for travel and on-the-go use * Sensitive trigger can detect even the weakest breaths * No need to remove it from the carrying case to charge * Made in the USA ‎The innovative iGo2 Portable Oxygen Concentrator (POC) has created a new category of products - auto-adjusting POCs. This first-of-its-kind POC uses patented SmartDose technology. You can now enjoy life with greater freedom without worrying about changing oxygen settings during activity. This gives you the peace of mind and freedom you've been looking for. * Compatible for in-flight use * Lightweight and easy to carry in a convenient shoulder bag * Revolutionary SmartDoseTM technology automatically adjusts oxygen production and delivery in real-time to meet patient demand