Remove all the hassle with self-setting time control by radio frequency in La Crosse Technology's Atomic Analog clock. Signal is updated automatically for Daylight Savings! This clock is accurate to the second and with large viewing numbers you won’t have any problems checking your time!. Single button operation. Atomic Self setting time with Manual Setting. ⚠ WARNING: This product can expose you to chemicals including styrene, which is known to the State of California to cause cancer. For more information go to: www. P65Warnings. ca. gov. Glass lens with metal hands. Requires 1 AA battery (not included). 4 US time zone settings (PT, MT, CT, ET). Automatically Updates for Daylight Saving Time (On or Off Option). Atomic analog style 12" cherry-colored veneer clock offers convenience of self-setting time and automatic resets for Daylight Savings time.