1. 2.4GHz wireless/BT mouse. 8m transmitting distance. Built-in USB receiver. In 2.4G running mode, you should insert the receiver into computer. In BT mode, you should make BT connection first. 2. Ergonomics design with metallic color and comfortable grip. 3. Precise optical trace. 1000DPI and 3500fps refresh rate. 4. Spin the battery cover to open. 5. Compatible with various systems and computers.