widely compatibility: the bluetooth headphones fit most of bluetooth devices, such as pc, cellphone, tablets, tv. (note: you need a separated bluetooth transmitter when connected with tv or pc, or use its wired mode). the headphones are good companion for leisure, working, studying, running, travel. the nice-loonking and superb performance will be a perfect surprising gift for kids, boys, girls, family, lovers and friends in any special holidays or birthday. | hands-free control & built-in mic: the wireless bluetooth headphones are built in hd microphone to achieve a high definition calls. the bluetooth v5.0 promises the stable connection and faster transmission speed. note: the microphone is only available under the bluetooth mode. | superb sound quality & over ear noise isolation pads: the baseman wireless bluetooth headphones are equiped with dual 40mm large-aperture driver units, which is provided the headphones for powerful bass, clear vocal, and crisp high tones form perfect balanced sound. you can immerse yourself in the rich audio. | adjustable & foldable : the over ear headphones features with an adjustable headband which could stretch out and draw back to fit different head size. the folding headphones design make it convenient to storage and carry, so that you can bring it to travel to anywhere you want. space-saving foldable design not only saves space but also makes these lightweight headphone portable. best choice to take it study, outwork, travel. | 8+ hours playing & wireless and wired mode: the over ear headphones are built in a 300 mah battery to provide 8 hours playing or calling time. the headphones will come with a 53 inch long audio cable to achieve never power off listening. and pay attention that you'd better take off the overhead headphone every 2-3 hrs to get your ears relaxed and comfortable.