Ergonomic design supports optimal hand and wrist positioning for all-day comfort The plastic in this product contains 43% post-consumer recycled (PCR) content. *Excludes PCB assembly, rechargeable battery, 2.4GHz dongle and charging cable Supports up to three devices- two via Bluetooth® connections and one via the 2.4GHz USB-A receiver Windows and macOS compatible Swift Pair Technology reduces pairing hassles and simplifies Bluetooth® connection for Windows devices Includes video conferencing keys and RGB indicators for connection status, caps lock and battery life Customisable keys allow you to create macros, adjust key mappings, manage profiles and more Windows ARM-based computers are currently not supported. Please check back for future updates on compatibility This product is designed to comfortably fit users with small to average-sized hands For professionals wanting to reduce the fatigue associated with spending long hours typing each day, the Pro FitErgo KB675 EQ TKL Rechargea