Light duration Autonomie Distance
1 LED Maximum
60 Hours t 0 = 35 meters
t 30 = 30 meters
t 10h = 20 meters
t 30h = 7 meters
Optimum
80 Hours t 0 = 27 meters
t 30 = 25 meters
t 10h = 19 meters
t 30h = 9 meters
Economic
120 Hours t 0 = 18 meters
t 30 = 17 meters
t 10h = 15 meters
t 30h = 13 meters
Boost mode
20 Seconds t 0 = 50 meters

Read about the ATEX standard