UGREEN Ergonomic Contoured-Shape Mouse is designed for comfort and efficiency. It supports both 2.4 GHz wireless and Bluetooth 5.0 connections with a range of 15 meters (49.2 feet). The mouse offers adjustable DPI settings (1000/1600/2000/4000) for precise control and features five functional buttons, including a silent click button with a lifespan of 3 million clicks. The scroll wheel is made of durable rubber with a silent encoder and a lifespan of 300,000 cycles. It runs on a 1.5V AA battery, works with multiple systems, and operates reliably across various temperature conditions.