Keyboard Features Durable and sleek design Spill Resistance Laser Print Technology Adopted, Long Life Superior Stretch Silica Gel Material, Excellent Elasticity Keystroke Lifetime : Over 30 Million Strokes Key Switch : Rubber Membrane Key Switch Connection Type : Nano Reciever Power : 1 x AAA Battery (Included) Operating System : All Microsoft Windows & Mac Mouse Features Ergonomic Design for Both Hands Precise Resolution with 1200 DPI Silent Switches for Noiseless clicking Power : 1 x AAA Battery (Included) On/Off Button for Power Saving Keystroke Lifetime : 5 Million Times Working Current : 3mA Working Voltage : 1.5 V Supported OS : Windows & Mac Warranty : 3 years