1. High-end stereo bluetooth speaker 2. Soft housing, with metal netting(customizable design) 3. Two pieces of 40mm 5w driver deliver massive and rich sound 4. Large speaker cavity inside for excellent sound effect 5. Lf diaphragm inside delivers outstanding bass 6. Built-in recharger battery supports up to 14 hours' playback time 7. Built-in microphone for hands-free phone call 8. Five buttons for controlling tracks on phone wirelessly 9. Siri function can be actived by pressing a button on the speaker 10. Battery status can be displayed on iphone 11. Low battery warning when battery power is low 12. Easy connect to phones or other bluetooth devices 13. Can be used as a wired speaker 14. Nfc function(optional)