Dont drop it! Recharges in 2 hours. The quality of the ones I got for myself was overwhelmingly superior to these. Ive several broken toes that rub the inside top of the Crocs so can only be tolerated for a short time without socks. It just will not put charge into the quest anymore as it?s constantly switches itself off. Over all the sound quality is very good, much better then the 600, good quality sound in all my games both PC and PS4, it is very durable. Battery life is excellent, and hopefully the product is waterproof as claimed. If you receive a Speaker and the low battery beeping bothers you, be sure to contact the W-King team and they should be able to help you solve the issue. Very Nice shoes indoor wearing. The directions say no tools but I suggest using a small hammer to securely insert the bars.