Glovion Modern Triangle Wooden Imitation Desk White LED Digital Alarm Clock -Time Temperature Date Voice Sound Control (Included Us Plug ) Size: approx 5.91 * 3.15 * 3.54 inch / 15 * 8 * 9 cm (L * W * H). The material is Imitation wooden(MDF) Clear LED Display: Time (12/24 hrs) and Temperature ( C/ F) Three groups of Alarm. ( Notes: If you think the brightness is higher for your bedroom , you can choose the sound activated model for night use) Display can be set to be Sound Activated mode (Clock keep working) OR stay on all the time. In sound activated mode, display turns off after 15 seconds. Clap hands/make a sound/simply touch the clock to activate the display to read time. Dual Powered: 1. AA battery * 3pcs(not included), 2. With our free AC adapter to help you save the cost of battery consumption Fashionable and portable digital desktop alarm clock for home & office dcor, Please don't use AC adapter we supplied and Battery at the same time, it is easy to destroy the inside electronic parts .When you use AC adapter for energy saving ,please do remove the dry batteries firstly.