4 Modes ConnectionTECKNET's KB005 computer keyboard takes connectivity to the next level by adding a 2.4G wireless option to traditional tri-mode Bluetooth keyboard. You can effortlessly switch between 4 different devices (3*BT mode + 2.4G mode) with this full size bluetooth keyboard, expanding your device compatibility across desktops, laptops, tablets, phones, or smart TVs within a 15M. This wireless keyboard for laptop also auto detects & adapts to different operating systems, making your work more efficient & hassle-free Rechargeable ConvenienceThe rechargeable keyboard has a built-in 500mAh large-capacity rechargeable battery, no more frequent battery changes, lasting up to 180 days on about 2-hour charge (based on 2 hours of daily use). The keyboard wireless automatically enters sleep mode after 30 minutes of inactivity and wakes up instantly with any key press, ensuring no delays in your work (Please fully charge before first use) Quiet & Fluid Typing, Deep Focused