Part Number 4Y41S04667 Feature Product Description Crafted for professionals, the keyboard delivers unrivaled functionality, comfort, and style. The sleek, responsive keyboard ensures a silent typing experience. Seamlessly connect to up to 3 devices via Bluetooth 5.3 and 2.4GHz for rock-solid reliability—perfect for boosting productivity across all your devices. Top Features Reliable 2.4GHz Lenovo Pro Unified USB Receiver, Dual Bluetooth 5.3; 95% post-consumer recycled plastic materials including 20% reclaimed from Lenovo own products; Customization software tool: Lenovo Accessories and Display Manager; AES-128 encryption to protect your security; Low-profile, 3-zone silent keyboard for effortless typing; LED indicator for keyboard: Low-battery, CapsLock, NumLock, 3*device switch; One-touch dedicated media controls(F1-F12 keys) for productivity; Adjustable tilt leg and spill-resistant keyboard design; Up to 36 months battery life (may vary based on usage); Enjoy total peace of mind thanks to the 3 years warranty.