This model has the following features:

FEATURES

Latex-free and shatter-resistant material
Available in blue with grey border and black base
Supports up to 159 kg (350 lbs)
Weighs 9 kg (15 lbs)
65 cm (20 in.) diameter and 25.4 cm (10 in.) high when fully inflated
Double overmoulded black platform for added strength
Includes hand pump and owner's manual
Smooth, non-slip, non-marking base

While the Bosu Balance Trainer -2893 :

Latex-free and shatter-resistant material
Available in blue or pink with grey border
Double overmoulded black platform for extra strength
Smooth, non-slip, non-marking base
Supports up to 159 kg (350 lbs)
Weight: 9 kg (15 lbs)
Diameter: 65cm (65")
Height: 25.4 cm (10") when fully inflated
Includes hand pump

In general the next gen has a more non-slip surface. It also has quadrants that allow for precise body positioning and markings.