Feature:This product can easily be attached directly to the walls with just a screw.Cuckoo bird pops out and sings once every hour from 7am to 9pm.And we are sorry the pack donot included battery, you need buy battery for this clock.The window open automatically at Hourly chime, the Cuckoo will be jump out and talk "Cuckoo" at same time, after reports time had ended, the Cuckoo return, the window close. Its can adjust the bird sound volume.Time reporting proofreading steps:1. Turn the hour hand by hand to adjust to the local standard time, correctly puts in 3 x Type C batteries, press the ADJUST button on the back of the product once, the window opens, Cuckoo launches, and will report 6 times "Cuckoo" (representing that the time is 6 am) If the ADJUST button is pressed once, the hour time will increase by 1 hour.1. Adjust the ADJUST key according to the difference between the adjusted local time and 5. For example: the current time is 4:30 pm (ie 16:30). After installing the battery, you should press ADJUST 11 times (16-5).1. Adjust the volume button (VOLUME) to control the time volume.Shell Material: ABSColors: Blue, Green, WhitePower Supply: 3 x Type C(R14) Battery (not included)Function: Intelligent time reporting (21: 00-6: 00 not reporting)Overall Size: (L)X(H) 20x25cm /7.87"x9.84"(appr.)Package includes (package):1 x Cuckoo Quartz Clock With Tail1 x Hanging Hookhint:1. Due to different monitors and usage conditions, there may be some differences between the actual product and the picture.2. Due to manual measurement, please allow an error of 1-3cm. thanks.Due to different lighting effect and monitor setting, actual item's color may not exactly reflect color on pictures.