BACKORDEREDThe Flexineb E3 System is a portable, silent, highly effective equine nebulizer that delivers aerosolized medications and natural therapies to the airways of the horse. The soft flexible mask fits over the face of the horse and creates a seal by tightening the strap around the head. Since the battery is rechargeable, the Flexineb unit may be placed on the horse while walking so that deeper respiratory function is encouraged.Launched in 2020, Flexineb E3 controller is the new and improved version of Flexineb.New E3 Features:3-user selectable modes depending on medication being administeredOptimized performance with improved auto-tuning and dry med cup detectionAutomatically turns off after 35 minutes6 hours battery lifeThis complete Flexineb system provides everything required including: a 10 Milliliter Standard Flow Medication Cup, a 20 Milliliter Extension Cup, Metered Dose Inhaler (MDI) Adaptor, Aerosol Holding Chamber, Inlet Valve Kit, Exit Valve Kit, Flexineb E3 Controller Kit with safety strap, Battery, Battery Connector Cable, Flexineb 120 Volt Charger System, Mask Strap, Blue Soft Shell Mask, User's Guide and Carrying Case.Inside mask circumference is 20".