Feature: 1. Large Display: Large digital hour, minute and second display, with day and temperature display, digital tube display, easy to see from a distance. 2. Accurate Travel Time: This digital wall clock travel time is very accurate, the accuracy is less than or equal to plus or minus 0.3 seconds per day. 3. Plug In Use: LED wall clock, plug in use, no need to replace batteries frequently, black frame, generous and elegant, perfectly matching any space. 4. Easy To Use: A variety of hanging holes, countertop placing design, safe and stable hanging, not easy to fall, you can also use the clock on your desk. 5. Usage Scenarios: Digital calendar clock is suitable for study, restaurant, office, conference room, computer room, laboratory, school, hotel front desk, etc. Specification: Item Type: Digital Wall Clock Material: Aluminum Alloy, Plastic Product Size: Approx. 27.5 x 13.7 x 2.8cm / 10.8 x 5.4 x 1.1in Weight: Approx. 971g/34.2oz Wall Clock Battery Parameters: CR2032 Button Battery, 210mAh (Built in) Doorbell Battery Parameters: 23A 12V Alkaline Battery (Not Included) Scope of Application: Living Room, Bedroom, Study, Office, Kitchen, School, Public Place. Package List: 1 x Digital Wall Clock1 x Doorbell1 x USB Cable1 x Plug2 x Screw1 x Accessories1 x English Manual Note: Manual measurement, please allow 0.4‑0.7in error.