Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: how is the noise isolation on these?
Document: I really like the product. It has good battery life and so is the sound quality.Noise cancellation is basically like putting two pads on your ears, nothing outstanding but they do cancel lots of noise. The pads are really comfortable! Although they degrade in comfort over time but not too much!
Floating memory foam cushions comfortably rest against the ears while delivering rich sound with solid bass and digital noise and echo reduction. By connecting the included USB cable to a PC, charging occurs quickly (3 hours max) and results in 9 hours usage or 200 hours on standby.
Because of that fit, it seals off noise and keeps the sound tight in your ear in a very comfortable way. This also means that if you wear glasses, the headphones don't even go near where the glasses arm is. The downside to this design is that it is much easier to fall off your head.BATTERY LIFEOne day, I used these for more than 3-4 hours with no problem. I haven't done further testing.
Charge over your lunch break and they will definitely go the rest of the day.-Phone Calls, I love to make with these headphones. Cleaning, cooking or walking sound comes out of both ears and sound great and clear. May not sound like a Pro but if you Bluetooth on one ear a lot you'll appreciate it.-They don't block all outside sound. Some like to notice isolate or noise cancel.
The cushioned earpieces double as background noise-mufflers, so using this smaller headset is actually comparable to using a pair of those bigger ones which envelop your entire ear.I haven't had an issue with battery life and have used my headset for hours of phone time in between charging, with no trouble.The design is light, but comfortable, especially with the cushioned earpieces.Finally, I enjoy the convenience of the micro-USB port.
They are cushiony and soft. They do not put a strain on your ear or temples causing discomfort after wearing for long period of times. I normally wear large earrings and these headphones don't even cause pressure points against them when I have them on. It is like the cushions spreads out around your ears in an even way but you still can hear what is going around you since they are NOT noise cancelling (which is important when driving). They are extremely lightweight and adjustable to fit anyone.
The Phillips shb9100/28 Bluetooth headphones are awesome! All phone calls were clear and concise. I've even had some people ask me to turn my volume down because they say I was too loud. Lol the music comes thru sounding as it should, no over bearing bass or high pitched treble and most background noise is gone. They are quite comfortable as I wear them while im working for 8-12 hours at a time and the battery hasnt died on me yet!
I try several bluetooth stereo headset but the battery was always a problem for me.Pro- 9 hours of battery almost real- Great audio for a bluetooth headset.- Great designCons- the ear cushions help to reduce the exterior sound but isnt noise canceling.- When you use it a long time an hour or more the headset feels uncomfortable- The white color is nice but it will be get dirty in the future- I dont like the materials
PROS:1. Good looks. The combination of a black outer shell and white inside of the headband is eye-catching.2. I was initially concerned that the white parts may become visibly dirty over time, but they are a combination of white plastic and another durable material.3. The microphone for calls is good and generally no problems should be expected. You may need to speak up at times though.4. Ear pads are soft and block a good amount of outside noise.5.
this iss my second pair -- they are comfortable, lightweight and sound great. Can use aux cord to connect as well. the ear cups swivel for safe storage and conform to head/ear fit perfectly. I devour audiobooks and these are the phones I use to do so.
Answer: It's perfect. Presents no noise. And people around me do not hear the sound.