Specification: Size: 66*104*38mm Shell material: ABS Applicable models: laptop Photoelectric resolution: 1600dpi (dpi) Number of keys: 4 (keys) Interface: USB Wireless transmission frequency: 2.4GHz Operating distance: 10 (m) Connection method: 2.4G/Bluetooth (dual wireless) Compatibility: windows/mac os/iso, etc. Endurance: about 1-3 months Package quantity: 1*USB silent wireless mouse + USB interface description: The wireless mouse is connected via a USB receiver. Ideal companion for laptops for home and office use. Using 2.4 GHz wireless transmission, operating distance up to 10 meters Ergonomic design, comfortable to hold and use. Small and light, easy to carry. Morandi color, full elegance, silent button, convenient for office