Here in short my experience with the deleyCON BT05 + Sound quality + Comfort + Battery life + Easy BT pairing with multiple sources (PC, Nexus7 / 2013 Galaxy S3) + Interference-free transmission BT + Good BT reach + No BT background / ambient noise (unfortunately a disappointment in almost every other BT headphones I've used) + Transport box Even after several days of use, I have no real criticism found (bez. Color, design etc, there are naturally different views). I have used the headphones in BT mode to listen to music and watch videos. The headset function as well as the cable operation I did not use. I would like to highlight a positive customer service seller MEMORY KING. A sporadic Übetragungsstörung with the Galaxy S3 was able to notice from the seller be eliminated simply on S3. MEMORY KING also sends immediately a replacement to if necessary. The product is recommended. I would buy the deleyCON BT05 again immediately. The price / performance ratio is excellent.