Dispose of the used battery promptly. Keep away from children. This unit includes a preinstalled Sony Lithium battery (CR2032) as back-up power source for the clock, which is preset to EST (Eastern Standard Time) at the factory. And this battery is considered part of the product.
Setting the clock Plug in the unit. Press and hold DISPLAY/CLOCK for at least 2 seconds. The year starts to flash in the display. Press TIME SET + or – repeatedly to set the year. Press DISPLAY/CLOCK.