Printer FeaturesHorizontal, Wall—hanging design.Easy of use feature include drop in paper load and auto cutter.Compatible with ECS/POS. Direct thermal printer GP01 Thermal receipt printer GP02 FeaturesSupport thermal transfer and directthermal printing.Max print speed up to 127mm/s.8MB flash memory, 8MB SDRAM.Ribbon core inner diameter: 0.5″.Bartender special edition. Thermal transfer / Direct thermal GP03 FeaturesUltra fast print speed: 300mm/s Max.Intelligent cutter control system.Support queuing function.Easy Maintenance: Takes 5S to update firmware only.USB+Serial+Ethernet interface, satisfied your diverse using environment. Thermal receipt printer GP04 Features Horizontal, Wall-hanging design.Easy of use feature include drop in paper load and auto cutter. Cloud Thermal receipt printer GP05 FeaturesCutter life upgrade to 2 million cuts.Printhead life upgrade to 150km.Easy Maintenance: 5S for firmware update.Supports 58/80/82.5mm paper roll width.Up to 300mm/s printing speed.Steady performance: Apply auto cutter error calibration and printhead overheat protection system.Excellent compatibility, rich software on Windows, Linux, Mac, Android, and IOS operating system. Thermal receipt printer GP06