Move between two PCs using both Bluetooth and a 2.4 GHz wireless connections. Efficient battery life delivers up to 15 months of everyday use.[ 1]. Get convenient control with 2 thumb buttons preprogrammed to go forwards and backwards. Customize your tracking speed to your desired sensitivity with adjustable DPI between 1200 and 3600. Connect to and control your smart TV to easily navigate streaming services and other sites. Advanced Encryption Standard (AES) technology protects your communication by encrypting your mouse. An ergonomically designed thumb rest enhances comfort during use.