Mice & Trackballs Feature: 1: 800-1200-1600 DIP switch,DIP Three Gears/Rapid Positioning/Precise Tracking 2: Ergonomic shape,Long-term use will not cause exhaustion 3: Mute Botton,the sound produced can be reduced by about 95% compored with other mice , and the button life is up to 5 million times. 4: Widely compatible,Support all major brands of mobile phones,tablets,laptops,all-in-ones, smart TVs, Apple, Samsung,OPPO,VIVO, Huawei Xiaomietc.on the market. It can be used on tablets and mobile phone Bluetooth 5.0 + 2.4 G connection+receiver Stability of 20 m transmiion signal, the wire connection of wirele bluetooth technology to replace the heavy and complicated, create desktop clean and beautiful Bluetooth 5.0 wirele transmiion technology silent mouse Silent micro motionnoise reduced by 95% Precise positioning 800-1200-1600 DIP switch An ergonomic shape Long-term use will not cause fatigue