Operating System: v4.2.2 (Jelly Bean)
Display Size: 8 inches, 800 x 1280 pixels
3.5 mm Audio Jack
Processor Speed: Processor Type: Dual-core 2.0 GHz

RAM: 2 GB
Card Slot, upto 32 GB
Dual Sim, NO

Operating System: v4.4.2 (KitKat)
Display Size: 8.4 inches, 1600 x 2560 pixels
3.5 mm Audio Jack
Processor Speed: 2.3 GHz Processor Type: Quad-core 2.3 GHz

RAM: 2 GB
Card Slot, YES
Dual Sim, NO

Operating System: Android, v4.2.2 (Jelly Bean)
Display Size: 7 inches, 800 x 1280 pixels, ~ 216 PPI
3.5 mm Audio Jack
Processor Speed: 1.6 GHz Processor Type: Dual-core 1.6 GHz

RAM: 1 GB
Card Slot, upto 32 GB
Dual Sim, NO