Speaker unit: 57mm Bluetooth version: upgrade to 5.2 Bluetooth version Frequency response range: 40Hz~18KHz Battery capacity: lithium battery 1500mAh Output power: 5W Play mode: Bluetooth/AUX audio cable/SD card Charging time: 2.5H fast charge Product size: 90*90*210mm Receiving distance: 10M (obstacle-free receiving distance, depending on the environment and equipment, the receiving distance will vary) Battery life: 6H~8H
