Model Number: MW-066 Key Specifications/Special Features: Storable micro receiver 1.the mouse can track on more than traditional led-based optical navigation. 2.storable micro receiver. 3.high quality manufacturing standard,repays consumers. 4.capable of sensing high-speed mouse motion while prolonging battery life two performance areas essential in demanding cordless applications. Battery:adopt 2aaa alkaline batteries(no charger required). Main Export Markets: Central/South AmericaNorth America