About this item SOUND TO GO - Never leave awesome sound at home again. This ultra-portable, waterproof Bluetooth speaker is small in size but with surprisingly big sound. Clip it on with the built-in carabiner, press play, and make the moment pop. 4 HOURS OF PLAYTIME: Don't sweat the small stuff like charging your battery. Oilisi gives you up to 4 hours of playtime on a single charge. NOISE CANCELLING & WIRELESS STREAMING - Wirelessly stream high-quality sound from your smartphone or tablet. Plus, take crystal-clear calls from your speaker with the touch of a button, thanks to the noise and echo-cancelling speakerphone. WIRELESS BLUETOOTH STREAMING: Wirelessly stream music from your phone, tablet, or any other Bluetooth-enabled device. Mini portable size: Designed to carry comfortably, ultra-light and easy to put in your bag or backpack, suitable for leisure, entertainment, office, indoor, outdoor, hiking, beach, etc.; perfect for travel and hiking.