The Ralemo Air 1 impresses with its unique, modern, elegant, and simultaneously robust design, made from an aluminum alloy. Its compact shape fits comfortably in the hand, and the click noise-reducing "Silent-Click" feature provides freedom and tranquility wherever you work. This wireless mouse transmits using Rapoo's latest and most powerful wireless multi-mode technology – via reliable 2.4 GHz radio transmission, Bluetooth 3.0, or Bluetooth 5.0 – allowing you to connect simultaneously with up to 3 devices and switch between them (automatic pairing). Adjustable sensor with 1,600 DPI: Enjoy complete control. With the adjustable DPI sensor, accuracy is no longer left to chance. It can be set between 600 and 1,600 DPI, allowing you to tailor it to your needs. Eco-friendly battery, no more battery changes: Thanks to the built-in, eco-friendly lithium battery, a full charge can last up to 25 days. No battery replacement is necessary.