Features: brand new and high quality Alarm clock function,customize setting according to your needs, accompany you every day. Automatically power off when fully charged. Bluetooth-compatible 5.0 provides instant pairing and stable transmission without interruptions. Using upgraded dynamic coil speakers to enhance the sense of depth, presence and space, and present a three-dimensional surround effect like a live scene. Specifications: Material:ABS+Metal Color:Black,White(optional) Bluetooth-compatible Version: 5.0 Operating Range: Up to 33 feet (10 meters accessibility) Battery Life:About 4-6 hours Charging Port:USB Frequency Range:80Hz-20KHz Speaker: 4 3Wx2 Battery:1500mAh 3.7V Power:5V 1A Music Format:MP3WavWmaFlacAPE Signal Shielding: 90dB Speaker Size:38.8x5.3x6.5cm/15.27x2.08x2.55in Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xBluetooth-compatible Speaker 1xUSB Cable 1x User Manua