About this item^ SIZE JUST LIKE A COIN: It may be the smallest wireless speaker in the world,You can easily put it in your pocket, hang it on your phone or backpack and take it wherever you want.^ MINI SIZE BUT POWERFUL SOUND: The volume is definitely bigger than all current mobile phones, this mini bluetooth speaker allows you to enjoy a clear, well-balanced, full-range listening experience in camping, picnic and room.^ BATTERY LIFEThe battery lasts about 2 hours at 100% volumeabout 1 hour at 50% volume.It only takes half an hour to fully charge.Support to play while charging.^ SPECIAL FUNCTION: Do you feel that it is difficult to operate with one hand when taking a selfie with your mobile phone?This small bluetooth speaker allows you to selfies, with the speaker button using your free hand. You can also phone calls with the click of a button.^ EASY TO USE: All-in-one nonfunctional button lets you enjoy music / hands-free calling / camera remote shutter functions by a single press. The speaker is compatible with most devices that have Bluetooth connection enabled, or any smartphones for that matter^