Funsparks EBSP1000-G - 2 In 1 Wireless Bluetooth Speaker Or MP3 Player - Water-Resistant, Portable, Mini (Green) Usage: hang it on the bike, backpack, belt loop, in the shower, beach chair, etc. Place it on your desk. Quality: crystal clear and loud sound, incredible strong for a 3W speaker. Water -resistant, shockproof, Dustproof. Modern design. Compatibility: works with all Bluetooth enabled devices, I.E. Smart phones, laptops, etc. Micro SD card. Aux cable Playtime: at 80% volume: with Bluetooth about 5 hours; with Micro SD card or aux about 6 hours. Recharge by USB the high-end built-in battery Content: 1 water resistant Bluetooth speaker, 1 USB cable, 1 aux cable, 1 user manual