Features:  Portable handheld BT thermal receipt printer, mini and lightweight, easy to carry. Support BT4.0 and USB cable connection, compatible with iOS, Android, Windows system.  Widely used in bill printing, post receipt printing, restaurants ordering information printing, shops receipt printing and so on.  Easy to load paper and use, can hold paper roll with 40mm diameter, 80mm paper width, 75mm effective print width, max. 100mm/s print speed.  Built-in 2280mAh rechargeable lithium battery, can be continuously printing up to 3hrs, print receipts at any time.  Adopting thermal print head, no need of ink cartridges or ribbons, clear printing, improve your work efficiency.    Specification:  Model: PT-300B  Color: Black&Orange  Printer Size: 14 x 12 x 5.5cm/5.5 x 4.7 x 2.1in  Style: Black and white  Max Paper Size: 80mm  Print Width: 75mm  Max diameter of paper roll: 40mm  Print Speed: 100mm/sec  Dot Per Lie: 384 dots/line  Support Barcode: 1-D: UPC-A, UPC-E, EAN-13, EAN-8, CODE39, ITF25,CODABAR, CODE93, CODE128  2-D: QR CODE  Interface: BT, mini USB  Battery: 7.4V, 2280mAh Lithium Battery  Charging Time: About 6hrs  Continuous Printing:  3hrs  Commands: ESC/POS compatible with order sets  Operate setting: Temperature -10°C~50°C ; Humidity 20%~85%  Storage Setting: Temperature -20°C~70°C ; Humidity 5%~95%  Print Head Life: 100km  Size: 123 x 108 x 52mm  Weight: 300g  Paper Type: Thermal Roll Paper  Thermal Paper Size: 78 x 40mm  Package Size: 153 x 138 x 83mm/6 x 5.4 x 3.2in      Package Weight: 500g/17.6oz    Note:  1. Please download the driver via: https://drive.google.com/file/d/1xdwMVX_-NTuXZww_WGLM5UyXRk3wQ2qI/view?usp=drivesdk  2. Various APPs are compatible with iOS system (Dlabel, Baypage, caysnprinter) and Android system (Dlabel).   3. If the APP is connected to an IOS system phone,  please enter the Bt connection from the APP. The Android phones can connect directly to BT function.    Packing List:  1 x Receipt Printer  1 x USB Cable  1 x Thermal Paper Roll   1 x User Manual