The A4TECH Fstyler FBX51C Rechargeable Bluetooth & 2.4G Wireless Keyboard offers dual connectivity options, supporting both Bluetooth and 2.4GHz connections. With automatic channel sorting, it can be paired with up to 4 devices, allowing seamless switching between up to 3 Bluetooth devices and 1 2.4GHz device. The keyboard features scissor-switch keycaps for responsive tactile feedback, reduced key clatter, and calibrated precision, with a 1.5mm actuation point for efficient typing.Designed for convenience, the FBX51C is rechargeable via a Type-C USB port, with a charging time of approximately 2.5 hours. Its low-profile chocolate keycaps and ultra-slim chocolate-style keycap structure ensure comfort during long hours of use, while its compact design takes up minimal space on your desktop, allowing for a cozy mouse position.The keyboard also features a tiny receiver storage compartment for portability and effortless layout switching between different operating systems, including Windows, Mac, iOS, and Android. Backed by a 01-year warranty, the A4TECH Fstyler FBX51C Wireless Keyboard offers reliability and versatility for your typing needs.