Bedroom Alarm Clock with Large Display LED Digital Clock USB Charging, LED Color Screen Alarm Clock, WhiteProduct size 155*40*90mmPacking weight: about 216g Input voltage: 100-220VPackaging size 157*45*94mm USB output 5VFeatures1. "TIME SET" current time setting(1) Press and hold time set to enter the clock setting, the clock will flash, rotate the big round key at the top to set the current clock(2) Click time set to confirm to enter minute setting, rotate the big round key at the top to set the current minute(3) Click time set to enter 12/24 hour setting, rotate the big round key at the top to set(4) Click time set to enter the day of the week setting, and rotate the big round key at the top to set the day of the week. After the setting is completed, click time set to confirm and exit the time setting.2. "Alarm Clock Settings"(1) Long press the alarm button and rotate the large round button to set the clock(2) Press the alarm button for the second time and rotate the large round button to set the minute(3) Press the alarm button for the third time to select the ringtone (a total of 8 ringtones: cicada/rain/ocean waves/bonfire/birdsong/church bell/piano 1/piano 2)(4) Press the alarm button for the fourth time, rotate the large round button to adjust the alarm volume, 1-16 levels of volume adjustment(5) Press the alarm button for the fifth time, rotate the large round button to set the day of the week, and then complete the setting3. "FM" radio(1) Click the FM key to switch the radio on and off(2) When FM is on, press and hold the FM button to enter the automatic station search mode. The search range is 76.0MHZ~108.0MHZ. After the search is completed, the first found radio frequency will be automatically played.(3) After FM is turned on, long press the VUL/TUME- and VUL/TUME+ keys for 2 seconds to switch to the upper/lower radio channel(4) Click the VUL/TUME- and VUL/TUME+ keys to adjust the volume of the current radio station(5) Radio frequency adjustment, rotate the large round key to adjust the current frequency to 0.1MHz4. "Alarm working mode"(1) Daily alarm (MON-SUN)(2) Working day alarm (MON-FRI)(3) Weekend alarm clock (SAT-SUN)5. "Colors" font color: In the time display state, click the COLORS key to switch the display font color (white, red, green, blue, gradient, phantom, left and right gradient, up and down gradient)6. "Dimmer" screen brightness: click DIMMER, the screen brightness changes from bright to dark (4, 3, 2, 1, OFF)7. "Sleep Timer" sleep timer: Click the round button and rotate to set 10-120, 180, 240min custom automatic shutdown.8. "Snooze" snooze function: When the alarm clock rings, press the snooze button to get an additional 9 minutes of snooze mode, with no limit on the number of times.