Alldaymall F-497 Wf-502B Cree Q5 Single Mode 200 Lumens Hunting LED Flashlight Torch, Blue Light Blue light makes blood easier to see in the dark Very mild and doesn't affect night vision, used to read maps and nautical charts Suitable for outdoor activities, especially for hunting Durable construction, output bright can come to 200 lumen Power by: 1 x 18650 (not included)