Reddit reviews outlite A100 Portable 2000 Lumens Handheld LED Flashlight with Adjustable Focus and 5 Light Modes, Outdoor Water Resistant Flashlights High Lumens, Tactical Flashlight for Camping Hiking Emergency

It's part of a flashlight like this one. The design is common among chinese led flashlights so it could be branded anything.

My go to set up is a

• Canopy ($50 from walmart, but more expensive ones will probably last longer)
  
  
• Tent (4 person tent works for me, I bought this one on Amazon when it was on sale for $50 IIRC)
  
  
• Air bed (standard queen air mattress, but set up your tent a few days before the festival to make sure the air mattress will fit inside the tent)
  
  
• Bedding, blankets, pillows: Put this stuff in your car after you wake up each morning (or in a Ziploc. I use a large vacuum bag). If the nighttime temperatures drop too much the temperature deviation will cause condensation to form on everything in your tent.. aka your blankets will be wet when you come back to sleep.
  
  
• Aside from that, some LED lights (I have a flashlight and headlamp) for walking and some LED lighting for your campsite. The guy next to me hung up 10 or so of these LED Camping Lights on the horizontal bars of his canopy, and it was great for chilling at the campsite at night
  
  
• I have a ENO Hammock as well as the Air Hammock. The latter is what I slept on alot during Okee. I put my phone and everything in the car and just had my keys in my pocket. With a a pillow and heavy blanket I slept maybe 2 nights and several naps like that

A flashlight is very useful. It will typically stop someone for a second or 2, which can give you time to get pepper spray if you need it, or to call for help, or run.

Its obnoxious so i wouldn't shine it in everyone's face, unless you mean to tell them to f-off. But if you want to tell them to F-off without saying it a flashlight is a very useful tool.

A direct beam of light into your eyes from a flashlight will effectively blind you, you won't be able to see anything else, and at night it will shut down your night sight, so it will take a few moments for eyes to adjust.

Its also handy to have a flashlight around, and its not likely to be used against you. A large one maybe can be used as a weapon, it can help put some weight into your hands. But its not a great weapon to seriously hurt someone with.

Something like https://www.amazon.com/gp/product/B00R5VM3FM/ref=s9_acsd_top_hd_bw_b3W3jCt_c_x_w/141-6238864-6025522?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=merchandised-search-3&pf_rd_r=30Y9CATJM7SDTV1SBVRN&pf_rd_t=101&pf_rd_p=635b7ce7-657c-5924-b82c-db41c3f4394b&pf_rd_i=3222130011

I just prefer to use a small flashlight in a hip holster.

Do get a lithium battery, it's quite bright.

I use one of these & also carry one of these.

You're both right. I just went to Amazon and searched for "flashlight" without any special descriptions (such as "tactical"). One of the very first results on the first page was this $9 flashlight that does indeed have a built-in strobe effect. Whether it's useful or not for real-world search-and-rescue doesn't seem to matter. It's marketing.

Yea. This is what I recommend also. I have a $10 mini flashlight with a rechargeable enloop batteries. I also use the the 2fish velcro gasket w/o problemos. So much cheaper and brighter than specific "bike lights"which are amazingly overpriced IMHO.
https://www.amazon.com/Portable-Handheld-Flashlight-Adjustable-Resistant/dp/B00R5VM3FM/ref=lp_12023816011_1_1?srs=12023816011&ie=UTF8&qid=1522192376&sr=8-1

https://www.amazon.com/gp/product/B001CJXB5E/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

You don't need to spend $80 on some USB chargable fancy BS.