Sleek, lightweight, easy to use and easy to integrate, the STm.117b offers one-step media loading, an impressive battery life and a host of innovative features that will render hard-to-read, handwritten labels and receipts a thing of the past. STm.117b Standard Features Print Method:Direct Thermal Max Print Speed:80mm/sec, 3.15in/sec Dot Density:203dpi Dot Pitch:8dots/mm, 0.125 pitch Effective Printing Width:104mm, 832dots/line Paper Type: Thermal paper/Label Width: 25.4mm~112mm / 1in-4.4in Thickness: 0.06mm~0.16mm Roll Diameter: Max 56.0mm Roll Core Inner Diameter: 12.5mm ± 0.5mm Reliability TPH Life: 50km Pulse Activation: 50,000,000 pulse or more Fonts&Graphics Standard: Seven resident fonts 12-48 pt. Optional: International character sets Graphics, Line & Box Drawing: PCX and Bitmap Barcode EAN-8, EAN-13, Code 39, ITF, UPC-A, UPC-E, Codarbar, Code 93, Code128, PDF 417(2D), QR Code (2D), Maxicode (2D) Emulation ESC/POS, CPCL Command compatible Driver Window Printer Driver (7, XP, 2000, 2003, 2008, VISTA, 32 & 64bit), Windows (CE 4.2 & 5.0 / Mobile 5.0), Linux Printer Driver, Symbian, Blackberry Sensor Paper end/ Black mark/Gap/Cover open sensors Interface Standard: Serial (RS-232C), USB Option: Bluetooth class 2, Wi-Fi (802.11b/g) Battery Charger External Charger (Output 8.4 VDC/0.8A) Battery 7.4V 2200mAh, 3.7 Hrs Charging Time 20Hrs stand-by Dimension WxDxHmm| 149.2x162x70 WxDxHin | 5.87x6.37x2.75 Weight 527g (with Battery) Temperature Operation: -10~50°C Storage: -20~60°C Humidity Operation: 35~80% Storage: 10~90%Sewoo