Tecmarx Glider 221 Bluetooth MouseSilent Click , Slim Ergonomic Design, Adjustable DPI, 10m Range. Silent Click Technology: Reduces click noise by over 90% for a quiet and distraction-free working environment. Slim & Ergonomic Design: Ultra-sleek profile designed for comfortable use during long work hours. Adjustable DPI Control: Switch between 800 / 1200 / 1600 DPI for precise cursor control. Stable Wireless Connectivity: Bluetooth connectivity with a working range of up to 10 meters. Portable & Lightweight: Compact design makes it perfect for office, travel, and everyday use. Smooth Performance: Optimized for efficient and responsive navigation across different surfaces. Specifications: Bluetooth Version: Bluetooth 5.0 RF Frequency: 2402 – 2482 MHz Working Voltage: 3.3V – 4.2V Working Distance: Up to 10 meters Power Supply: 2 × AAA Batteries (not included) DPI Levels: 800 / 1200 / 1600 Adjustable Design: Slim, compact, and ergonomic for daily use Usage: Suitable for laptops, desktops, and Bluetooth-enabled devices