The kit Crazy Bat and Crazy Bat XL are novice modelers.
These are models that shoot with folded wings. After reaching the optimum height of the wing spread and the model continues to glide.
The smaller model corresponds catapult launch competition category in which you can with it and compete.
Conventional flight times for both models are from 15 to 45 seconds.
Photo instructions can be found here.
Model launcher with folded wings.