Bluetooth Shower Speaker, i-Kawachi(TM) IPX7 Waterproof Dust-proof Floating Bluetooth Shower Speaker Compatible with all Bluetooth ADVANCED TECHNOLOGY - We utilize the power behind rechargeable lithium-ion batteries. So, you can expect charges to be finished within 4-5 hours giving you an amazing charge for more than 15 hours of extended playing time afterwards. That's because we used a new battery with an improved capacity of 400 MAH . Storing more power and more energy than ever WATERPROOF IPX7 RATING EVEN FULLY SUBMERSIBLE - i-Kawachi shower speaker is so advanced in technology, with floating capabilities and rating which you can't say no to INSANE BATTERY LIFE- just try it yourself if your not amazed with the life of a single charge can do to this speaker than we don't know what will amaze you SIMPLY THE BEST OUT THERE - If you are going to the bother of getting a Shower Speaker for yourself or as a special gift for a loved one then do yourself a favor and get one that actually works and lasts. We sold so many of these our customers just love them, try it yourself and if you'r not satisfied let us know well make sure we take care of any concerns you may have