Your basic 7-segment LED, but in blue! Common anode. Two decimal points, but only the one on the right is wired. Digit height is 0.6". Overall height is 1".
Note: As far as we can tell the pin out in the data sheet is incorrect. This is the correct pin-out:
|2: D||9: F|
|3: Common Anode||8: Common Anode|
|4: C||7: A|
|5: DP||6: B|