Parameter: 1:Note:To connect the printer to the mobile phone, you must first turn on Bluetooth and locate. 2:Software name: fun print 3:Print parameters: 200DPI 4:Printing mode: thermal inkless black and white printing 5:Battery capacity: 1200mA 3.7V power battery,2A charging 6:Printing paper: 57X25mm, original printing paper shall be purchased for easy replacement 7:Connection mode: Bluetooth wireless inkless black and white printing 8:Language specification: Simplified Chinese/Traditional Chinese/English/Spanish/Arabic/Italian/Japanese/Korean/German/French/Portuguese/Russian/Thai/Vietnamese/Greek 9:Standard configuration: printer+charging line+manual+certificate+1 roll of printing paper Operation process: The first step is to charge the machine for 2 hours after receiving it, search the "WalkPrint" APP in Google Mall, and click Download, The second step is to open Bluetooth, network, locate, log in to APP, register account and log in, Step 3, click Add Device Binding Machine in APP! Print now There are three types of printing paper: 1:Self adhesive printing paper (can be pasted) 2:Color thermal printing paper (can't be pasted) 3:White thermal printing paper (can't be pasted)