There is nothing of any use in the manual. It's an A4 page.
Output & Runtime:
1 Lumen, 250 hours
150 L, 620 min
300 L, 350 min
470 L, 230 min
550 L, 180 min
850 L, 120 min
1200 L, 80 min
Strobe 1200 L, 160 min
"Notice: After long term working, the heat emitted by RRT3 may exceed the safe...