Part Number 4Y41K04039 Technical Information Brand Lenovo Supported OS OS Independent Power Requirement KB:420mAh lithium battery Cable Length/Type 1 M / USB A to C Battery Life Up to 3 months Battery Charging Time 2hours for full charge Hot Key F1 to F12 P1 to P4 Special/Added Features Programmable Keys / Lithium battery / Seamless switch up to 3 devices / Dual mode connections : 2.4G & Bluetooth Color Grey Backlight No Tilt Adjustable Yes Keyboard Key Lifecycle Up to 10 millions clicks Suspension Cap/Embedded Cap No Key Style Island style keys Switch Type Scissors switch keys X-direction Key Pitch 19.05 mm (0.75 in) Y-direction Key Pitch 19.05 mm (0.75 in) Length KB: 437.4 mm (17.22 in) Depth KB:128.8 mm (5.07 in) Height KB:14.8 mm (0.58 in) Product Weight KB:586 g (20.67 oz) Included Accessory Lenovo USB-A Unified Pairing Receiver Specialized Software/Driver Lenovo Go Central Connectivity 2.4G & Bluetooth Hardware Requirements Supported PC with USB-A port or Bluetooth Low Energy Package Type Brown Box (FSC Certified) Packed Dimensions (L x D x H) 495 x 129 x 42 mm (19.49 x 5.08 x 1.65, in) Packed Weight 795 g+/-40 g(28.04 oz) Minimum Operating Temperature 0 degrees Celsius (32 degrees Fahrenheit) Maximum Operating Temperature 40 degrees Celsius (104 degrees Fahrenheit) Minimum Relative Humidity (%) 20% Maximum Relative Humidity (%) 95% Warranty Period 3 Years Warranty Type Customer Replaceable Unit (CRU) Smart Find Visibility Yes