Used on wet or dry hair. This mini hair straightener suits for your DIY hair style. Emits negative Ions-leaves hair smooth, silky, frizz-free and healthy. Ceramic tourmaline plates enable smooth pulling motion without breaking or damaging to hair. With this hair iron, you can make your hair curly or straight in minutes. Uses PTC to give off heat, elevates temperature quickly. Descriptions: Stable constant temperature transmission. Durable for your long time use Lightweight and compact, portable for taking out. Specifications: Color: pink, black, blue Material: ceramic, metal, plastic Power (watt): 20WHeat conductor diameter: 16mm-20mmSize: 15x2.8cm/5.90" x 1.10" Wire length: 125cm/ 49.21"  Plug type: US  Package included:1 x Hair Straightener Notes: Please allow 0-2mm error due to manual measurement, thanks for understanding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you!   
As a heat package sealernulls a machine used to seal products , packaging  and other thermoplastic  materials using heat . This can be with uniform thermoplastic monolayers or with materials having several layers, at least one being thermoplastic. Heat sealing can join two similar materials together or can join dissimilar materials, one of which has a thermoplastic layer.
Just press the tool against the package and it seals the package for preservation .