The Kinesis Freestyle2 Blue is a popular wireless, split-adjustable ergonomic keyboard known for its zero-degree slope design. It replaces traditional physical cables with multi-host Bluetooth connectivity.You can find official details directly through the Kinesis Ergo Freestyle2 Blue for PC PageKey Specifications & Features

• Ergonomic Split Design: The keyboard consists of two separate modules connected by a flexible pivot tether. Disconnecting the tether allows for up to 9 inches of complete physical separation to accommodate natural shoulder width.
• Multichannel Bluetooth: Uses "Multichannel" technology to pair with up to three Bluetooth-enabled devices (such as a PC, Mac, tablet, or smartphone) and switch between them instantly using keyboard commands.
• Low-Profile & Zero Slope: Flat front-to-back layout minimizes wrist extension without forcing a painful 10-degree positive tilt common in standard keyboards.
• Battery Life: Features a built-in rechargeable battery that delivers up to 300 hours of active typing (roughly 6 months of normal use) on a single charge.
• Quiet Switches: Uses custom low-force, tactile membrane key switches with an activation force of around 45 grams.