Nitecore UT27 Professional Version

Using the HLB1300 battery pack
Turbo: 520 lumens
Spotlight High: 400 lumens - 6 hrs runtime
Spotlight Low: 100 lumens - 10 hrs runtime
Floodlight High: 200 lumens - 8 hrs runtime
Floodlight Low: 55 lumens - 13 hrs runtime
Red On: 16 lumens - 6 hrs runtime
Red Flashing: 16 lumens - 60 hrs runtime

Using 3 x AAA batteries
Turbo: 520 lumens
Spotlight High: 400 lumens - 4 hrs runtime
Spotlight Low: 100 lumens - 6 hrs 30 mins runtime runtime
Floodlight High: 200 lumens - 5 hrs runtime
Floodlight Low: 55 lumens - 8 hrs runtime
Red On: 16 lumens - 4 hrs 30 mins runtime
Red Flashing: 16 lumens - 45 hrs runtime