The airbag is named D-air® Street and it protects the torso, neck and back of the rider or pillion. The time for the activation is 45 ms. From the videos shown it may be derived that about 20 ms are required for the system to comprehend that the conditions for the accident have been set and about 25 ms to inflate the airbag. 
The airbag system has been also evaluated by the German ADAC. 
The price of the airbag system is about 1200 Euros, depending on the country.