Feature: 1. New upgrade: unique charging technology, built-in lithium battery 2. Mute design: click left and right to mute, click there is no sound 3. 3 kinds of DPI: adjustable to provide precise positioning Specification: Product name: 2.4G wireless mouse & Bluetooth 5.2 mouse Buttons: 4 Maximum DPI: 1600 DPI Adjustable DPI switch: 800 /1200 / 1600DPI WiFi range: 10M Battery: rechargeable Charging cable length: about 35-45cm Switch life: 10 million times Size: 112*58*25mm Support system: Windows / Mac / Android / iPadOS