whats the difference between good/bad pocket bike

[twboy1999]

is this a good pocket bike? $400.. do all the pocket bike only have 1 speed?

Technical Specifications:
AIR cooling system
Heavy duty chain
Engine Size: Two Stroke 49cc
Pull-start for maximum HP !
Tires and Wheels: 10 inches (tubeless)
Tank capacity: 1L
Oil type: petrol, 1:25 engine oil mixing
Load: up to 120KGS (240 Lbs)
Front: disc brakes. Rear: disc brakes
Top Speed: 45 MPH
User age 14+ years old
Bike measurements: 38" x 21" x 23"
Bike Weight: 23 kg (45 Lbs)

[Fast_Gal]

first of all there are 2 different types of smaller bikes:

1) pocket bike (really, really small and very useless)
2) mini bike (small but you can actually sit comfortably)

In my opinion mini bikes are better value for your money. If you're interested
I have one for sale brand new $550.