Features: Function: LED display, snooze, alarm clock, dual USB output, power-off memory, automatic dimming, night light, vibration reminder. Compatibility: Dual USB output for iPhone, Android phone charging and various USB-powered devices. Brightness adjustment of the electronic clock: Uses a high-sensitivity photosensitive sensor; display brightness can be automatically adjusted according to ambient light or manually set to three levels: high, medium, and low. Night light brightness adjustment: manual four-level brightness adjustment. Memory function: Built-in CR2016 button battery; when external power is disconnected, time and settings remain unchanged. Power supply mode: External 5V1A~5V2A DC power supply; standard shipment includes only a 1.5m DC power cable (adapter not included). Specifications: Material: ABS Electronic Clock: 158x55x87mm / 6.22x2.16x3.42inch Vibrator: 80x80x28.8mm / 3.14x3.14x1.13inch Note: 1. Please allow 1-2cm errors due to manual measurement; ensure you are comfortable with this before ordering. 2. Due to differences between monitors, the image may not reflect the actual color of the item. Thank you for your understanding. Package includes: 1 x Electronic Clock 1 x Vibrator 1 x English Manual 1 x 1.5m USB Cable 1 x CR2016 Button Battery (with insulation)