Alternate color or configuration shown Lenovo 4Y41C33791 numeric keypad Universal RF Wireless Gray Lenovo 4Y41C33791. Device interface: RF Wireless, Keyboard number of keys: 21, Purpose: Universal. Product color: Gray. Weight: 3.84 oz (109 g) Manufacturer: Lenovo SKU: 6621991 Manufacturer part number: 4Y41C33791 GTIN: 0195477831599 $67.99 Qty: Add to cart Custom wishlist OK Add to wishlist Add to compare list Email a friend Go beyond the limitations of your notebook and complement your workflow with a tactile, responsive 21-key keypad that sports premium scissor-switch keys and is compact enough to take on the go. With an impressive up to 3 months of battery life and a powerful 2.4 GHz wireless connector, you can rest easy knowing that your numeric keypad will be ready for action whenever you are. 21-key numeric keypadIndustry leading scissor switch keysDedicated productivity keys (Calculator, Tab, Equal, Esc keys)Minimalist design with ultra slim profile at 13 mmRechargeable , up to 3 months use in single charge (may vary based on usage)Supports Lenovo Unified Pairing Receiver Overview Specifications Contact Us Go beyond the limitations of your notebook and complement your workflow with a tactile, responsive 21-key keypad that sports premium scissor-switch keys and is compact enough to take on the go. With an impressive up to 3 months of battery life and a powerful 2.4 GHz wireless connector, you can rest easy knowing that your numeric keypad will be ready for action whenever you are. 21-key numeric keypadIndustry leading scissor switch keysDedicated productivity keys (Calculator, Tab, Equal, Esc keys)Minimalist design with ultra slim profile at 13 mmRechargeable , up to 3 months use in single charge (may vary based on usage)Supports Lenovo Unified Pairing Receiver Products specifications Attribute name Attribute value Width 5.23" Height 0.531" Keys operating life 10 million characters Key switch type Tactile Depth 3.35" Weight 3.84 oz Ergonomic design Y Pointing device N Device interface RF Wireless Wireless receiver interface USB Technical details Product color Gray Packaging data Package weight 9.77 oz Package width 7.09" Package depth 5" Package height 1.69" Operational conditions Operating temperature (T-T) 0 - 40 °C Operating relative humidity (H-H) 20 - 95 % Power Power source type Battery Features Purpose Universal USB hub N System requirements Windows operating systems supported Y Keyboard Keyboard number of keys 21 Wireless LAN features Frequency band 2.4 GHz Product tags (51242)