Sensor Technology:Optical Sensor Resolution:1000-1200-1600 dpi Battery Life:Up to 3 Months Battery Type:1*AA Buttons:4 Wireless Distance:Max.10 Meters Wireless System:2.4GHz Connection Type:Wireless (USB Receiver) What's in the box 1. GO W605 Mouse 2.Manual Book 3.1*AA Battery 4.USB Receiver Box size:7*4.3*10.9cm N.W: 47g G.W: 90g Carton size:42*37.5*24cm N.W: 9.2kg G.W: 9.8kg Qty/ctn:100pcs Ergonomic shape fits both left/right hands comfortably. Textured grip surfaces prevent slipping during extended use 1×AA battery included delivers up to 3 months runtime (lab-tested). Plug-and-play 2.4GHz receiver stores inside mouse body when not in use - no dongle loss.