Logitech (920-012251) Pebble 2 Multi-device Wireless Keyboard and Mouse Combo for MAC - Black Design: Slim, Lightweight, Minimalist Design for Mac Made with Recycled Plastic Pairing: Multi-device Pairing Up to 3 Apple Devices, 3 Easy-Switch Bluetooth Channels on Keyboard and Mouse Features: Silent Clicks with Silent Touch Technology; Scooped and Low-profile Keys Keys: Keyboard with Special Keys as Show Desktop, Brightness Up, Brightness Down, Voice Dictation, Emoji Menu, and Screen Capture Buttons: 3-button Customizable Mouse (Scroll Wheel with Middle Click), High-precision Optical Tracking, Adjustable 400-4000dpi (Normal 1000dpi) Connectivity: 10m Range Transmission via Bluetooth Low Energy Technology or Logi Bolt USB Receiver (not included) Battery: 2x AAA (Keyboard) 1x AA (Mouse) Batteries with On/Off Power Button Warranty: 2 Years Official Warranty