CHKOSDA Remote Control Jumbo Digital Led Wall Clock, Multifunction Led Clock, Large Calendar, Minute Alarm Clock, Countdown Led Clock, Big Thermometer, Mute Clock (Black Shell) 6 inches white LED light digital, long-distance readable and identify. It is good viewing experience indoor and very suitable for anywhere. Frameless and Ultra-thin box design. Unlike other alarm clocks have a thick frame. The maximum distance for the remote control is 15 meters (without obstacles), which is different from the traditional clock. Wall clock use AC power, there is no battery cover and it is designed, the button cell CR2032 will tightly fit if you install. Don't worry the battery will fall off. There are 142 LED lights in the clock and provides 8-level brightness adjustment by manual or auto dimmer. Supports ultra-long countdown! Not only supports 365 days countdown, but also countdown hours, minutes and seconds. Do not know how to set the countdown function, please contact us to get video tutorial.