These headphones seemed excellent for fitness; however, if you wish to use them for normal use, they are not very well suited. The delay between the speech in a video and hearing it in the headphones is extremely noticeable. This made them not good enough for my usage, so I have returned them.Overall excellent sound though.I would say if you are getting them for the gym, running etc, then that will be excellent; however, if you think you will want to watch videos with these connected, look elsewhere.

If I could give these earphones nil stars I would.
Noise cancellation is effective but not a good as my Bose headphones, overall sound quality is not much better than some cheap bluetooth headphones I bought for my first foray into wireless.
Battery life is terrible, you are supposed be able to get a full charge from the carry case after 1.5 hours but I barely see 20 mins use.
Having queried this with Sony Support they advise a software update. Used the app to do the update which constantly fails, Sony's advice try using another phone !
Having spent a lot of money on these useless headphone and useless support I cannot recommend.

I really wanted to like keep these headphones only for gym if my budget allowed because it had very good sound quality and fitment. The only thing that made me return them was the video latency.

Weird shape with weird extra bit to make them fit in ear that is too big. Compared to over-ear wireless they are so complicated to use. Don't last very long and horrible. I want my money back but sadly didn't ask quickly enough. I'm hoping that Sony will offer me my money back regain some reputation but considering that they created this rubbish I doubt it.

I finally found headphones that are the perfect companion for my workouts.Waterproof, powerful sound with a lot of bass, extremely comfortable, solid connection with almost no dropouts, no wires.The only minus point someone can mention is average battery life compared to competition. Most competition lacks in other areas anyway, and these are not meant for long travels, they are sports headphones and 3 hours of juice is enough for 99% of workouts. And popping them in the charging case for a bit will keep you going longer.Also, on my Xperia XZ3 there are no sound/video sync issues, but I am aware that older phones might not be able to be smart enough to know what kind of headphones they are and sync accordingly.

These were awful from the beginning.
Pros:
Compact
Lightweight
Very comfortable (for me)

Cons:
Awful sound quality
Poor quality case (sounded like it was scraping on the earbuds every time you'd open the lid)
Cannot be used to watch anything as the sound is not in sync

As much as I would like these to work as intended, the quality wasn't even comparable to my £20 MDR-NC31E, The sound is so tinny and flat you'd think they were a fraction of the cost. I can honestly only recommend these if you pick them up for under £30. It's a no from me.

After searching high and low for the holy grail of truly wireless headphones I thought I'd found them! I've previously tried the Jaybird Runs and Sony WF-1000X's, both of which suffer from audio lagging behind video no matter what device I tried them on (S7, S9, iPhone 6, Tab S2). However, the WF-SP700N's have faired a little better.

There are no sync issues with my S9+ running Bluetooth 5.0, however, there are issues with my Tab S2 running Bluetooth 4.1.

If you're looking at purchasing these I'd suggest you check the BT version on your devices first if video playback is a primary use for you.

Im so disappointed!When these arrived I was so excited. They fit my ears wonderfully and securely. The noise cancelling feature was amazing and they were easy to set up.Since ive had growing niggles, a few times i've had to go back to basics and set them up a fresh for no apparent reason. Recently the sound has randomly cut out at intervals even when there is nothing between them and the phone. Then there is the battery life, supposedly 3 hours with two extra full charges in the case. Ive never got more than 2 hours out of them and recently its been about an hour. I often wear them while im working and I cant get from my morning tea break to lunch time.Today the headphones are exactly 1 year old and the warranty on them is now up, youve guessed it they have stopped working. The bluetooth in them has failed and wont connect to my phone at all. Its not the phone as this has been tested with my fitbit and with a friends wireless headphones. Shocking given the price that they lasted just about a year!

These unfortunately arrived faulty so unable use . Very frustrating. Will update on refund situation as it progresses .

First of all, the earbuds arrived earlier than expected which is great. The earbud that worked was fine, and if the other one worked I'd have probably been quite happy with them.Sadly one of the buds didn't work, and I spent the night and the morning of the next day sweeping through forums trying to find ways to fix my issue, with no success. To what I found while the earbuds are inside the charging case the one that didn't work would slowly flash red which led me to believe that it had no charge, which was impossible as it had been on charge with the other bud that was working. After failing to find any solutions to this, I have requested a return to seller and will now see what they come back with.