This headphone is 110 in-ear wireless. it has a pro audio sound. it can work up to 8hrs on a single charge. it takes about 2hr to get charged fully. it comes with smart voice command features. you can control your music/ calls and more without taking out your handset with the help of an in-line remote button on it. it gives a comfortable fit to your ears for listening to music for a long time without irritation. it has a very clear sound you can receive hands-free calls using a built-in microphone.