Warranty: 1 Year Features: 87-key compact keyboard design. USB interface with easy plug-and-play setup. Key life up to 8 million keystrokes. Ergonomic high-key design for comfortable typing. Compatible with Windows and Linux systems. Technical Specifications: Wireless Frequency: 2.4GHz Working Distance: Up to 10 m Voltage: 3.0V Current: <20mA Dimensions: 285.5 × 120.5 × 25.1 mm Weight: 240 g Material: HIPS