Mixcder's ShareMe 7 headphones score highly in the connectivity category for two reasons. First, they come equipped with Bluetooth 4.1, the latest edition on the scene. The range is about what you'd expect with any Bluetooth device—any obstructions, such as walls or furniture, will interrupt your connection. Otherwise, the Bluetooth experience is on par with any other product.
As is consistent with the technology across the board, Bluetooth is not necessarily ideal for video streaming, such as YouTube and Netflix. But this is improving with each new version of Bluetooth. Even with the ShareMe headphones 4.1 edition, there is a slight (but barely noticeable) delay in the audio. However, this is not a major drawback of the headphones since you have to really be paying attention to notice it.
What gives these headphones a top review is the inclusion of an aux cable. If such a delay in audio bothers you, simply plug in the headphones via auxiliary and continue enjoying! Also, having the aux cord as a back up comes in handy when the battery dies, perhaps on a long airline flight or commute.