Headset help needed.

Hello everybody.
Since my everyday headphones finally died on me (old HTC phone headphones ) I am in desperate need of some new ones. Primarily for music/media but also for some gaming, mostly CS:GO. Since I would use them mostly at work where I have to walk around the office constantly, I though that bluetooth headphones would make sense, but I have absolutely no idea what to look at when choosing them.
Also, since I'm on a tight budget, I was looking at these:

http://www.amazon.co.uk/Gembird-BHP-BER-W-Bluetooth-Stereo-Headset-BERLIN/dp/B00HRLGWY8/ref=sr_1_5?ie=UTF8&qid=1396259487&sr=8-5&keywords=gembird+bluetooth

These would fit my needs very well, I think, since I don't expect much out of them. Decent sound quality is all I'm asking for here.
Any other suggestions would be greatly appreciated.
Thank you.