Mouse Specification: Yes, the battery indicator light is illuminated. Keyboard Distance Measurement Yes, backlighting Bluetooth Low Energy connectivity with a 10-meter battery life range Ten days at full charge, or five months when the backlight is off Physical attributes Dimensions: Width x Depth x Height 131.95 x 131.95 x 20.97 mm; Weight: 506.00 g PRESENTING DICTATION, MIC MUTE/UNMUTE KEYS, AND EMOJI Better Fn Keys You can now send emoticons, mute and unmute your microphone, and enable talk to text with the required Logitech Options software, which is available for Windows® and macOS at www.logitech.com/options. SMART LIGHTING. BECAME SMARTER. Your hands are detected by proximity sensors, which illuminate the keyboard as soon as your fingers get close. When you walk away, the backlit keys automatically switch off and adjust to the lighting, saving power for those