Worry about food gets spoilage because the storage bag not seal well? This bag sealer can slove the problem. It is constructed with ABS material shell and a built-in 1300 mAh rechargeable lithium battery (includes a USB cable). It has 3 temperature gear for sealing different thickness and material bags. Simply switch and press the button on top, then you can seal or open a bag. A good product for daily life. 4 4/5" L x 1 9/10" W x 2 1/5" H