DOSS BS4 Portable Bluetooth Speakers,Water Resistant Ultra Slim Pocket-Sized Portable Wireless Speakers with Built-in Rechargeable battery,support handsfree,3.5mm line-in,6 hours of Playtime[Gold] DOSS Cloud Fox Bluetooth 4.0 speaker provides strong bass and loud sound with built-in 3W driver & bass radiator and A2DP/AVRCP support. You can enjoy HD clear music everywhere. Extra long built-in rechargeable 1000 mAh battery allows you playing music up to 10 hours, almost all day.LED indicator shows the battery level. The speaker has a range of about 10M. It pairs easily with your smartphone, iPod iPhone iPad or other Bluetooth devices. And it remembers the most recent six devices you've used, so reconnecting is even simpler. It has built-in MIC Bluetooth speaker and hands-free function, so you can conveniently pick up a call by this mini speaker in car, bathroom, at home or office, anywhere during it is connected to your Smartphone. Small size and easy to carry with, only 230g,it is ideal for personal usage, indoor party or outdoor BBQ or picnic with friends and family.