I would definitely buy another pair of these headphones. They include an AUX cable in case you don't have Bluetooth on the device you're connecting to. Charging is a standard micro USB.
The adjustable bass is awesome, goes from mild to borderline uncomfortable; Battery life has been great; They get pretty loud; They're not too heavy or clunky; Excellent price; No slip; Comfortable for a while
The only real problem is they make my ears sore after a while because they don't rotate to accommodate head shape as Bose Comfort headphones do; These are 1/3 the cost of the Bose, however.