• Weight 5lb only;with touch screen. Easy to use and suit for outing.
• External battery, easy replacement.
• Pulse dose: 1 – 5 setting
• Size: 23.9 (H) x 21.1 (W) x 9.1 (D)cm
• Body weight with battery: 2.3kg
• Battery Durartion: 4.5 Hours^#

• Light weight & small size, one-touch operation, relatively low cost.
• Pulse dose:
  Freestyle 3 settings:1 – 3
  Freestyle 5 settings:1 – 5 
• Size: 
  Freestyle 3: 21.8(H) x 15.5(W) x 9.1(D) cm
  Freestyle 5: 27.2(H) x 16.8(W) x 11.2(D) cm  
• Body weight with battery:
  Freestyle 3: 2.2kg
  Freestyle 5: 3.0kg
• Battery Duration:
  Freestyle 3:
  3.5 Hours^#
  Freestyle 5:
  2.5 Hours^#

Inogen G4 
Model No.: EQ00876

• Compact,lightweight and approved by Federal Aviation Administration (FAA) for flight within the United States.
• External battery, easy replacement.
• Designed for 24 hours use
• Pulse dose: Settings 1 - 3
• Size: 18.2(H) x 15(W) x 6.8(D) cm
• Body weight with battery: 1.50kg
• Battery Durartion: 5.0Hours^#

• Portable, small size and approved by Federal Aviation Administration (FAA) for flight within the United States.
• External battery, easy replacement.
• Pulse dose: Settings 1 - 5.
• Size: 21(H) x 22.2(W) x 7.6(D) cm
• Body weight with battery: 2.19kg
• Battery Durartion: 4.5 Hours^#