Qisan Wireless Optical Mice 2.4GHz Mouse 1600DPI 6 Button with Nano Receiver - CrotalusII(Black) w/Qisan Micro USB USB 2.0 Host OTG Cable Adapter Compatible with All Android Devices CrotalusII Wireless Gaming Mouse built-in Red LED Light, 6 buttons, Max 1600DPI, suit for playing game! The mouse has a storage area in the battery compartment to keep Nano Receiver.Safe and save place. 6 Button: Right Key, Left Key, Forward button, Backward button, DPI button and Scrolling wheel 4 DPI Adjust: 800/1000/1200/1600DPI free switching in different gaming environment. Black Color and White Color are Smooth UV Surface, Golden Color is Matt Surface