Compatible with for nelko p21 portable labeling machine. 1 roll of white label paper included, each measuring 15x40 mm with 180 labels per roll. label paper reduces waste and cuts down on ink costs. non-, waterproof, oil-, colorfast, tear-, and scratch- material. ideal for organizing , cosmetic classification, business displays, price tags, school and office document labeling. Item Name: Bookmark Printer Battery: 1000mAh Features: Wireless, Rechargeable, with Tape Size Detail:L: 13cm/5.12Inch, W: 8.6cm/3.39Inch, H: 3.2cm/1.26Inch(.) Notes: Please do not tear off the label on the back of the label strip because the label strip contains a smart chip. Smart chips can help label manufacturers automatically identify the size of the tape and proper alignment. Damage to the smart chip may cause defects in the label strip. When purchasing label printing supplies, please choose supplies that are suitable or recommended by the machine seller to achieve the best printing results. Colour:As Shown Material:ABS Package Contents: 1 * Bookmark Printer 1Roll * Printing Paper 1 * Data Cable 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.