Keyboard Features Durable and sleek design 12 Multimedia hotkeys, easy to use Low profile keys Superior Stretch Silica Gel Material, Excellent Elasticity UV Print Technology Adopted, Long Life Spill Resistance Keystroke Lifetime : Over 30 Million Strokes Key Switch : Rubber Membrane Key Switch Power : 2*AAA battery (Included) Frequency : 2.402GHz – 2.485GHz Keyboard Specifications Keystroke Lifetime: 30 Million Times Working Voltage: 5V Working Current: 15mA Keystroke Drawing Force: 1.5KG Keystroke Operating Force: 55 7g Operating Systems: All Microsoft Windows & Mac Mouse Features 2.4G wireless technology, 800/1200/1600 DPI Ultra Low Battery Power Consumption Power consumption will be under 0.5mA without moving, less than 15 A after 30 minutes KAILH Silent Switch Accurate optical engine for better tracking 5 millions times switch, super long lifetime Auto channel hopping in 16 channels to avoid conflicton On/Off button for Power Saving Power: 1*AA battery (Included) Mouse Specifications Keystroke Lifetime: 5 Million Times Working Voltage: 1.5V Working Current: 3.5mA Supported OS: Windows, Mac Warranty : 3 years