Instruction: Answer the given question using the supporting document.

Input:
Question: If built-in speakers are low-volume, maybe the solution is to listen with headphones.  Question: Does it have a headphone jack?
Document: But I am concerned if the volume might be too soft on an airplane, but then again you are stuck on the plane with your own 10" screen and watching blu ray, I figure you are already ahead of most passengers. One might need to shop around for headphones with more sensitivity.I have hooked up the headphone jack via a Y cable to stereo receiver, this is completely analog, the amount of hiss is acceptable unless you press your ears to the tweeter of your main speakers. I have experienced no buzzing.
I figured headphones would be better. And, they were. Barely. I will have to pick up some headphones that have a volume control on them. Don't get me wrong, with the headphones the sound is perfect but sometimes you want a little louder that what this unit can produce. It came out of the box and the volume was already  maxed out. I thought maybe it was low and I was wrong. Not a deal breaker for me simply because headphones with volume controls can fix that.I tested the unit with BD, DVD, and DVD-R and they all played great.
A little flap that opens on the side of the case to make these connections would have been nice.The built in speakers is a bit weak, as in not very loud, but still stronger than most laptop speakers by a margin, and it should work fine in a quiet environment. There are 2 headphone jacks which is a nice touch, be prepared to crank the volume control all the way up, the player plays full dynamite range so the dialogue is a bit soft and explosion is still loud, as intended.
I assure you that I have only used new, unscratched discs.In other areas, the speaker is very small, the buttons on the unit itself are completely black, so they are incredible hard to see in darkness and there is only one headphone jack. The power switch and the volume knob are difficult to locate by touch.The picture is good but since most bluray a won't work in it, who cares?I'd suggest waiting until more of these hit the market or spend the extra money on a sony.
I am very glad that it was not an issue. And I am VERY piccky about picture quality. At 10" it is one of the largest screens in the portable catagory and it is great.Sound wise we have an issue. There are no buzzing, humming, or beeping sounds out of this unit, but the volume is too low. I think some people will be upset with how low it is. It is very crisp when played through the speakers and is OK if there is nothing else going on in the background.
My wife and I usually use a portable DVD player on airplane flights. This one works great on the plane using headsets. It is a great price and the most important thing for me is I don't ever have to buy regular DVD's again since I use Blu Ray at home. I highly recommend this player because if you search high and low you will never find a portable Blu Ray this cheap. The volume through the speakers is low and a little tinny but for headsets it is fine. It has HDMI out as well as composite audio and video.
the only thing i have found so far is when you are watching dvds, there is a loud humming noise if you use headphones. it is not affected on speaker, just when i plug in the headphone
Moreover, it has an automatic resume feature if I restart the player after shutting it off. Wow, I thought I was dreaming at first! (Yes, this is the titular feature of this review.) Other points to mention: An icon gives you brief updates on battery life. It has an HDMI out port. The sound is so-so from the speakers, but I always use headphones. A negative: the on/off/charge switch is a bit lame. It's tough to tell the three positions by touch, and it can move too freely.
I went to Target. They only had the fake/display models out and said that they won't allow people to test them out in the store. So I asked if I could return it w/out penalty and was told yes.Here's my review: Visually it is an extremely nice player, but audio-wise it is extremely bad. It has an annoying, audible beep coming from the body somewhere while the movie is playing and there is a low-level buzz that runs in the headphones. I've tried a few different headphones and in some it is so much that it is hard to hear the regular audio.I don't know if this one is defective or if they are just bad in general, but I'm not going to find out.
I must admit that I was a bit skeptical when I bought this one. Then again, if they can make a portable DVD player, why not one for Blu-ray? Being totally blind, I have no idea how well the pictures look, but the sound is nice and crisp, despite a low maximum volume. There is no hissing, buzzing, or beeping out of this unit, which is nice. I have owned several portable DVD players, and the biggest beef I had with them is a short battery life.
Answer: It does have a headphone jack and you can hear better with them