Keyboard Distance Measurement Interaction Bluetooth and USB receiver for Logi Bolt (included) Range 10: Up to five months of battery life Scissor keys are a type of membrane key. Ideal Stroke Keys Important Personalization Logi Options for Fn-row Up to three devices are connected. Harmony Power USB-C to A - 10 days per charge for Windows, macOS, iPadOS, ChromeOS, and Linux Five months without backlighting Pale gray/graphite in color Product Guarantee One-year warranty Physical attributes Weight: 810.00g Dimensions: 430.20 x 20.50 x 131.63 mm; Width x Depth x Height