ELECOM M-IR07DRBK M Size 3 Button Elecom Mouse Wireless (Receiver Included) M Size 3 Button IR Sensor Low Power Black M-IR07DRBK Approximately 2.5 years without battery replacement. Wireless IR LED mouse using low power infrared LED. This is an IR LED mouse that uses a low power infrared LED. Because it consumes less power than mice that use Blue LED or laser, you can use it for about 2.5 years without replacing the battery. It adopts a symmetrical design that is symmetrical and does not choose how to hold it. It has a resolution of 1200 counts for smooth operation. #ELECOM #M-IR07DRBK #M Size #3 Button