Features: 1.Mobile operation is more relaxed than ordinary mice. Small compact design, the size of the pen, the function of all mouse 2.Human engineering design is more suitable for hand. Small size, portable. Can be loaded into the bag 3.The best promotional gifts, students' favorite. Plug and play, no need to drive 4.Accurate sensing components, sensitive to 3 DPIs, use more heart?should.Easy to use 5.Exquisite and small, notebook users preferred, the new generation of products have adapted for left?handed users, so that the left hand users are also used specification:Item Type: Mouse Pen Material: ABS Key Number: 4 Keys 3 DPI: 800/1200/1600DPI Button: 5,000,000 Times Current: 15mA R F Frequency: 2402MHZ-2480MHZ Application: PC, Smart Television, Set-Top Box Support: For Windows 7 / Vista / Xp / 2000/ Andorid/Linux/ Os X Battery s: 1 AAA Battery (Excluding) PackageList: 1 x Mouse 1 x User Manual 1 x USB Receiver 1 x TYPE-C Adapter 1 x Micro B Adapter 1 x Mouse Base NoteWithout battery delivery