U.S. order will be shipped before Jan.31 Tutorial for keyboard Design Size: 415*178.6*57.6 mm Streamlined 75% layout with 79 keys  + Control Knob Programmable control knob for enhanced functionality Pudding PBT Keycaps with Dye SublimationKey Art Sturdy metal construction for premium quality Mechanical Switches Custom GravaStar x Kailh Speedy Mint linear key switches 45gf actuation force, 1.2mm pre-travel, 3.5mm total travel Smooth linear switch characteristics Construction Gasket-mounted design for improved typing feel 5 layers of sound dampening foam for premium acoustics Gasket-mounted FR4 material plate Lighting Dual independent RGB backlighting systems Customizable RGB lighting effects Power Large 8000mAh rechargeable battery Tri-mode connectivity (wired, Bluetooth, 2.4GHz wireless) Packaging List 1 x Keyboard1 x Type-A 2.4GHz Receiver1 x Type-A to Type-C Cable1 x Keycap & Switch 2-in-1 Puller1 x Cleaning Brush4 x Extra Switches (1 x Kailh Platycodon Switch, 1 x Kailh Crackle Ice Box Switch, 1 x KTT Silent Blue Switch, 1 x KTT Baby White Switch)1 x User Manual1 x Cleaning Cloth