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 clock is resin material, not wood. But it's better for long years use no fade. Its can adjust the bird sound volume. Material: Resin Color: A Size: 38x21x10cm Weight: 600g Package includes (package): 1x Cuckoo clock hint: 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. Fits well on your desk, bedside table, etc.