The Streamlight Survivor has long held the trust and respect of professionals around the world. Now, there are more good reasons than ever to make it your flashlight of choice for your job's most challenging situations. Streamlight offers exceptinal durability and weather resistance, rugged enough to survive a UL-30ft drop test. In addition, Streamlight's new and improved professional light is engineered with a one-way valve for case venting and O-ring sealed openings to protect against moisture and dirt.