Respironics Trilogy Evo Detachable Battery 3B Medical Viva Nasal CPAP Mask Another handy feature you'll enjoy

Another handy feature you'll enjoy is the ability to time your workouts which allows you to track and measure your progress

On/Off switch and low battery warning

ergonomically designed

so you can be confident of obtaining a secure and comfortable mask fit

• All Cylinders Ship Empty

Respironics Trilogy Evo Detachable Battery 3B Medical Viva Nasal CPAP Mask Another handy feature you'll enjoy*All battery purchases are final sale. There are no returns on batteries.* Compatible With: Respironics Trilogy Evo Portable Ventilator (DS2110X11B) A fully charged, detachable battery will supply at least 7. 5 hours of usage under normal usage conditions. * Hot Swappable on the go *