Overall, nice headphones, especially for the price. Plastic, but feels like good plastic (the size adjustment rails are metal), seems to last. The ear cushions are soft and comfortable, they also fully cover the ears. The sound is a bit bassy, ​​but that's to be expected for headphones in this price range. I feel like they would need to boost the eq more in the 600Hz - 18kHz band to balance it out. They don't have a very large soundstage, but a good crossfeed can solve this a bit for some genres of music. One of the negatives is that they emit quite a bit of sound when the volume is turned up. A lot of higher frequencies seem to escape from the back of the headphones. It can be uncomfortable for people around you (especially those sitting next to you) I don't mind because they are meant for bedroom use. Bluetooth or cable, the sound is the same (on the cable they play a little better and more balanced, maybe a placebo?). I can't comment on the battery life yet, they automatically turn off when not in use. Charging time is approx. 3 hours to full.