Feature: 1. 【All in One Printer】 PeriPage A40 mobile printer, ideal for printing PDF file, test paper, webpage, contract, photo, picture, etc. Long standby time and with app which has a variety of materials and typography,easy to set up and print, an excellent assistant for study and office work. 2. 【Multiple Printing Sizes】 With 2 clips to adjust the paper slot width, A40 thermal printer is support 210mm/107mm/77mm/56mm (A4/4\"/3\"/2\") width of thermal paper now, different sizes of paper to meet your printing needs on multiple occasions. And support use with roll paper and folding paper as well. 3. 【Convenient for Your Life】 With compact size - 265x80x45mm/10.4x3.1x1.8in. Built-in 2pcs 2600mAh rechargeable batteries, which can continuous print 3hrs after full charged, long standby time of 90days, great for carry to business travel, school etc.You can print invoices, contracts, lists and exam documents contracts on sitewith your phone or computer. 4. 【High Compatibility】 Support IOS and Android mobile phone by bt connection. Turn on the printer by pressing the power button for 2sec first. For Mobile Device, download the APP (PeriPage) first and enter it and connect with the machine through BT function. If you need to print with the computer, please download the driver first. (The driver is not support macOS for now) 5. 【Premium Printing Quality】 A40 printer equipped with high quality print head, which has over 50km print life and printing about 168000 A4 Paper. Adopt advanced thermal printing technology, no ink cartridges or consumables are required, energy saving and environmental friendly.(Recommended to buy PeriPage thermal paper together for clearer printing, not compatible with plain paper) Specification: Specification: Model: A40 Battery: Built in Rechargeable Battery 2600mAh x 2, 7.4V Continuous Working Time: 3hrs Standby Time: 30 Days Input: 5V 2A Connection: BT, Type C Printing Technology: Thermal Printing Product Size: 265x80x45mm/10.4x3.1x1.8in Weight: 658g/23.2oz Package Size: 320x230x75mm/12.5x9x2.9in Package Weight: 2150g/75.8oz. Package List: 1 * Thermal Printer 1 * USB Cable 1 * A4 Thermal Paper Roll 1 * User Manual Note: 1. Please read the user guide carefully when you start to use the product. 2. Please download the app before use and connect the device via app. 3. Please make sure that only thermal paper can be used in printing. 4. The for OS X is not supported now. 5. If the printing goes wrong, please check the installation of paper roll