Split-Key Ergonomic Design: One-piece split layout separates keys into left and right zones to reduce wrist bending and support a natural hand position. Dimensions: 19.1 × 9.3 × 1.97 in; Weight: 2.26 lb. Ideal for long typing sessions. Dual Wireless Connection: Switch between 2.4 GHz nano receiver and Bluetooth. Nano receiver stores safely in the keyboard compartment. Plug-and-play setup requires no drivers or software. Requires 2 × AA alkaline batteries (not included). Dual OS Compatibility: Works with Windows and Mac, including shortcuts and function keys. Easily switch systems via the bottom switch. Four additional Mac/Windows keys included with key puller for customization. Long Key Travel & Tactile Feedback: Extended key travel delivers responsive, tactile feedback similar to brown mechanical switches. Durable construction rated for up to 20 million keystrokes. Curved Rows & Ergonomic Keycaps: Stepped, curved key rows promote natural typing posture. Curved keycaps with flatter tops and back edges fit fingertips for comfort. Made from ABS with 4.2 mm membrane key travel.