Silicone, Plastic Operating Mode: Electrical Item Dimensions L x W x H: 15 x 8 x 5 cm Are batteries included? :without Upgrade shockproof---different from other types of alarm clocks. Our Relime Clock with Silicone Case. The lovely silicone helps to add a non-slip element to it, it helps to protect the clock from minor drops, it is a great choice for travel or outdoor activities. BulletPointWake You Up--- Just press the alert button to activate the alert setting. It starts with a short beep and then gets louder until you turn it off. Also has a snooze function that rings again after 8 minutes. Built-in Light Night---large digital LCD screen, super clear and comfortable visual experience, allowing you to see the time without hassle, easy to read. The night light is very soft and protects children's eyes at night. It also doesn't disturb sleepiness. Widely used --- Easy to set time and alarm, just press or long press the button. Relime digital alarm clock is very Suitable for kids, teens, girls, bedroom, desk, kitchen, office. Hint: It is a 24 hour format clock. This alarm clock runs on 3 AAA 1.5V batteries (not included).