Led screen display time, bluetooth and battery status. Support alarm clock and FM radio function 3 working mode - Bluetooth,Aux and TF card Built-in 2200mAh battery,long endurance. Karaoke singing function Specification: Case Material: Plastic Application: Computer,Home Theater,Mobile Phone,Portable Audio Player Speaker unit diameter: 53mm Power Output: 5W Frequency Response: 50Hz-18KHz SNR: 70dB Connection Mode: Bluetooth+Aux+TF Bluetooth Version: Bluetooth 5.0 Bluetooth Range: 10-15 Meters Battery Capacity: built-in 2200mAh li-ion battery Charging time: 5 hours Playing time: 8 hours Standby time: 48 hours Color: Black/White Size: 120*120*110mm Unit weight: 450g Package List: 1x Bluetooth Speaker 1x Audio Cable 1x USB Charging Cable 1x Singing Microphone 1x User Manual