80mm Paper Wireless Portable Bluetooth-Compatible Receipt Thermal Printer for Android and iOS free SDK No Need Ink or Toner Recibos   Specifications   Paper Size: 80mmx40mm(max)   Specifications:   Overall Dimension (W×D×H)   98×103×45mm   Weight   280g   Color   Black   Effective print width   72mm   Print method   Thermal line printing   Print commands   ESC/POS compatible command set   Print speed   Up to 90mm/sec   Resolution   8 dots/mm(203dpi)   Print font   12x24/ 24x24   Column capacity   48 columns/ 24columns   Character size   1.5 x 3.0 mm(W x H)/ 3.0x3.0mm(WxH)   Paper dimensions   80.0±0.1mm x diameter 30.0mm   Paper thickness   0.06 to 0.08mm   Character set   Alphanumeric/ Chinese Kanji   Interface   USB, RS-232, Bluetooth (optional)   Flash   256kb   Power Adapter   9V DC/2A   Battery Power   7.4V DC/ 2000mA; battery can stay by for 4-5 days, when it is full power, it can print 120-150m paper   Other features   Paper detection, power detection, Manual shut down   Working conditions   Temperature:-10 degree C~50 degree C,Humidity:10%~90%   Storage conditions   Temperature:-20 degree C~70 degree C,Humidity:5%~95%   Device name   Can be customized, letter and digital for option, at max 30 ASCII characters.   Password   Enter default pairing code "1234", it can be customized. At max 6 digitals.   Power plug dimension   3.5*1.1mm   Packing Includes   If you choose the 'standard printer set', you will receive,   1 set Thermal Receipt Printer   If you choose the '12 rolls paper only', you will receive,   12 rolls paper only   If you choose the 'Add 3 Rolls Paper', you will receive,   1 set Thermal Receipt Printer   3 rolls paper