Product Description Battery parameters Battery type: lithium battery Power: 5W Battery capacity: 1200MA Full charge time: about 2 hours Full use times: about 150 times We use high-quality batteries with a standby time of about 30 days. Working Parameters Suction MPa: -60kpa Air pump capacity: 500CC Air pump motor: 370 air pump This Mason jar vacuum is made of ABS + silicone material, small in size, light in weight, powerful in function, easy to carry and use in a variety of occasions Electric operation, suitable for Mason jars of different sizes, 3.39in and 2.76in, and equipped with a vacuum nozzle, can be used with vacuum packaging bags and vacuum boxes Rechargeable devices are free from the limitations and interference of power cords, making your use more convenient and can also be taken outdoors.