GRANDO BH519 Active Noise Cancelling Headphones Wireless Bluetooth Over-ear Stereo Headset with Mic for Fire TV iPhone 7 Plus iPad

Here is the short version of this review: I like this headphone because the sound is good, and the active noise cancellation works well, but I don't like it because over-the-ear types of earpads provide better noise cancellation, not the on-the-ear types, because of simple dynamics - over-the-ear types block out more noise, and has a better sound fidelity.The one advantage of the on-the-ear types is that the earpads are smaller, so they should be lighter, smaller overall, and more portable.The Bluetooth version is 4.0, and the pairing was quick and easy. The buttons were easy to blind-find and press. The positioning of the buttons on the underside of the earpads minimize accidental presses.The audio quality is excellent, aided by large 40mm speakers. The impedance is 42-ohms-rated(low-gain), allowing them to drive low-output devices like phones and portable music players easily.Remember, there is also a built-in speaker, so you can also use this to answer/make phone calls, and also to use them as gaming headsets, such as for Xbox One, PS4, and PC.It takes about 3 hours to fully charge the headphone(350mAh batteries) from dead to full, which can last up to 10 hours of continuous playback.Finally, the charging method is through the included standard micro USB cable that you use to charge most Android phones.