Top 10 Best Digital Clock Without Alarm : Reviews & Buying Guide Katynel 3D LED Wall Clock Modern Design Digital Table Clock Alarm Nightlight Saat reloj de pared Watch For Home Living Room Decoration US $16.60 3d led relgio de parede digital design moderno de Vicedeal. Material: Acrylic+ABS Battery: CR2032 (for memory time when cut off power, not included, clock is powered by USB cable) Size: 24*9*4cm (larger than other store's) Power supply : DC 5V 0. 75W Comprehensive settings: 1. General setting: Long press "set" button to set "12 24H" "Time" "Year" "Date" "C F" by "+" and " " buttons .(tap"set" button to enter next setting) 2. Brightness mode setting: Tap "+" button "L SL" four levels of automatic sensitivity in sleep mode ;"L AU" three levels of automatic sensitivity ;"L 01" first brightness ;"L 02" second brightness ;"L 03" third brightness ; turn off the display . such a cycle operation . 3. Display mode setting: Long press "+" button to switch display mode: (1) Display Time Only (2) Time,Date,Temperature Cycle Display Alarm settings: 1. Tap " " button to open close alarm 2. Long press " " button to enter alarm setting 3. Start snooze: rings ,tap any clock key to start snooze ,alarm indicator light flashes slowly 4. Turn off the alarm: when the alarm clock rings ,long press any key to turn off alarm ,enter the next alarm state