Function: LED display, snooze, alarm clock, dual USB output, -off memory, automatic dimming, night light, vibration reminderCompatibility: Dual USB output, compatible with , phone charging and various USB powered devicesBrightness adjustment of the electronic clock: Using a high-sensitivity photosensitive sensor, the display brightness can be automatically adjusted according to the ambient light, or the brightness can be manually set to three levels of high, medium and low. Night light brightness adjustment: manual four-level brightness adjustment.Memory function: a CR2016 button battery is built-in, when the external supply is cut off, the time and various settings remain unchanged. supply mode: external 5V1A-5V2A DC supply, regular shipment does not include adapter, only 1.5m DC supply cablecolor:WhiteMaterial:ABSsize:158 x 55 x 87mmPackage Contents:1 x Alarm clock1 x Vibrator1 x USB cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.