about this article [Time Projection]: This alarm clock features a rotating projection to display the time and temperature on any wall or ceiling, with large, clear numbers visible from up to 3 meters away. [Multi-Information Display]: The multifunction alarm clock shows time, date, week, dual clock, temperature, and humidity. One clock meets all your daily needs. [Dual Alarm with Snooze]: Dual alarm function allows two separate alarms to be set on one device, ideal for couples. The snooze function provides an additional 5 minutes of sleep before the alarm repeats. [USB Phone Charger]: When connected to a power source via the included USB cable, the built-in USB port allows charging of mobile phones and other compatible electronic devices. [Two-Way Power Options]: Can be powered using a power cord (USB cable included, AC adapter not included) or by 2x AAA batteries (not included). Color: Black Product features: 1. Dual alarm with snooze function. 2. Displays indoor temperature and humidity, switchable between C and F. 3. Built-in USB port for convenient device charging. 4. Nearly 180-degree projection angle with adjustable rotation. 5. Compact, minimalist design with a large digital display for easy reading from any angle. 6. 4-level backlight (High / Medium / Soft / Off) Specifications: Type: Projector clock Time format: 12/24H Temperature range: -9C to +50C (15F to 122F) Temperature resolution: 1C / 1F Humidity range: 20% to 95% Humidity resolution: 1% Backlight levels: 4 (High / Medium / Soft / Off) Snooze duration: 5 minutes Power source: 2 x AAA batteries (not included) or USB power Package includes: 1 x projector clock