Product information: Product name: electric massage column Gear position: 4 gears Battery: 8.4V/2500mAh lithium battery Charging time: 3-6 hours Use time: 80-120 minutes Maximum load: 120kg Input power: DC 5V 1-2A Use object: sports fitness, daily massage Product size: 10cm*31cm Note: Before use, please disconnect the charging power source. When charging, the yoga column will not work; After charging is complete, unplug the charging cable and start the machine after the light stops flashing. Packing list: 1 x electric massage column