Product information: Interface type: Audio Bluetooth USB AUX Channel: 2.2 Play time: 6 hours Number of speakers: 2 Play format: MP3 Shell material: Plastic ‖ lens colour: (A) Advanced black standard version [mirror + 4 units + custom speakers + wired connection], (B) Crescent White Standard Edition [mirror + 4 units + custom speakers + wired connection], (C) Advanced black Bluetooth version [mirror + 4 units + custom speakers + Bluetooth can be wired], (D) Crescent White Bluetooth version [mirror + 4 units + custom speakers + Bluetooth can be wired], (E) Premium Black-Deluxe Edition [mirror + 4 units + custom speaker + alarm clock + 1500 mAh lithium battery], (F) Crescent White-Deluxe Edition [Mirror + 4 units + custom speaker + alarm clock + 1500 mAh lithium battery], (G) Luxury Black-Bluetooth Adaptation Edition [Deluxe Black Audio + Bluetooth Adapter], (H) Luxury White-Bluetooth Adapter Edition [Deluxe White Audio + Bluetooth Adapter]