perfect Solution for Dust & Water Proof:With double seal zipper and -porous design, this compression container provides a provides a closed and dry storage space for your products. Efficient Vacuum Kit:with self-sealing valve on the storage bag and a hand pump, this allows you to create a vacuum state for your filaments in a few seconds to keep in tip-top shape and portable. High Quality & Broad Compatibility:maded of food grade material, this environment friendly storage bag is safe, durable and recyclable; especially designed for 3D printer filament of 0.5KG/0.75KG/1KG and 1.75mm/2.85mm/3mm. It can also used for food or other material storage. Initialization password: 1122334 How to use: Long press the power button for 3 seconds (red light is on) enter the identification password (red and blue lights flash at the same time, indicating that the button is valid) click the unlock button to confirm unlocking (blue light is on) insert the computer to data transmission After unplugging the computer, the encrypted U disk will be automatically locked. Note: If the U disk is not unlocked, insert it into the computer, the unlocking is the same as above. the password: After unlocking with the initial identification password (blue light is on) click the unlock button (red light and blue light flashes at the same time) enter the identification password you to set (6-15 digit password, do not use ", 888888 and other continuous or single numbers) press the unlock button to confirm (red and blue lights flash at the same time) enter the identification password again, and press the unlock button to confirm (the red light is on for 3 seconds and then goes out, the blue light is always on), the new password is set success. memory size:128G Colour:dark grey Material:Metal Size:79 x 26 x 11.5mm Package Contents: 1 x usb flash drive Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.