SeedAudio Bluetooth Speakers, Ultra Portable Speaker Super Bass Stereo Sound for iPhone iPod iPad Android Smartphone MP3 Mini oval speaker: With mini size about 3.5 inch diameter and camping hook, easy to buckle on the speaker to your backpack, car, outdoor party or everywhere. Superior Sound Quality: Performance Driver delivers stereo sound with real presence, Spiral Bass Port provides controlled bass with plenty of punch, Enhanced Clarity with significantly reduced harmonic distortion. Free Your Hands: Built-in microphone for Hand-free Talking / On / Off / Play / Pause / Next (Volume +)/ Backward (Volume -) / Power buttons. Incredible Battery Life: 12-hour Playtime Powered by a Built-in High Capacity Li-ion Battery. Broad Compatibility: Quick pairing through Bluetooth 100% fits Apple device and Android device