Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Just what does it mean "streamlined"? It's shape is the same as the 2W, it doesn't look more aerodynamic. I can't see any difference.
Document: this works very well, I have had one for about three months, use it a couple of times a week. the battery is still charged, very bright, you can't look at the center when it flashes.
I have not had to use it in very wet conditions yet so I can't comment it's wet weather durability.The Hotshot is a good light, not perfect but among the best, especially for the price.
I bought this because during a group ride in overcast weather I could see this light over 500 yrds away bright as can be. I'll buy another for my helmet.
A number of reviews mentioned the mount was not designed well. They seem to addressed that, this light feels pretty firm when mounted up.I have been running this about a month, we will see how long it holds up. Recommended.
Buyer beware, there are two hotshot tail lights available on amazon. This one is a few dollars cheaper, but also has shorter battery life and only three modes. I was buying this to purchase the better model, but did not look closely enough. Maybe this review will help someone else get the better product. This is still a very bright quality light, but for a few more dollars you can get more flashing modes and more battery life.
I recently upgraded my bike lights and choose Cygolite for their quality and effectiveness. These are some of the brightest rear lights for early morning and night cycling. They keep a charge for many hours at high intensity and conveniently recharge by USB.I mount two of these rear lights on the seat post and set them for alternate flashing. Cars can see me from a distance away which keeps me safe on trails and streets.
I do ultra endurance cycling, 300+ mile rides, and see all the different rear lights out there from near and from a far. This one is always the brightest and longest lasting light out there. I can go a month between charges as I use it during the day as well. I have been seen over a mile ahead during the day in bright sun light in Southern California. I have one on my bike and now one on the back of my helmet as well.
Lights up for long distances. Just make sure to set it at the right angle for others to see. Holds a charge for a long time and takes the abuse of mud splatter from the back tire.
Then I have to wast my time on the phone with costumer service then sending it back at my expense.
Used this for the first time recently and it was very bright, exactly as I wanted. Will update after recharge test.
Answer: no