Wireless watch with adjustable backlight brightness. To turn on the backlight, simply touch the touch button located on the top of the "Night Watch" - very convenient if it happens in the dark: just touch the center of the top edge with your palm. The brightness of the backlight is adjusted by long pressing the button. The digital display adjusts to the room's lighting level using an optical sensor: at night, in the absence of light, the clock display lights up dimly and does not irritate the eyes after waking up, and also does not disturb sleep, while in sunlight the numbers will be brightly illuminated. Wireless watches have an alarm function, power saving mode, and a sleep mode that helps with comfortable falling asleep: in it, the display gradually dims over 30 minutes. Built-in 1200 mAh battery. Average operating time with the backlight off - 6 days. Operating time with the backlight on - 6 hours. - convenient touch button - smooth brightness adjustment - "smart" light sensor - alarm clock - power saving mode - sleep mode (gradual backlight off) - wireless: can be taken on a hike or trip