Triangle Alarm Clock - TOOGOO(R) &iexcl;&frac34;Voice Control Calendar Thermometer&iexcl;&iquest;Triangle Wood Wooden LED Digital Alarm Clock USB/AAA Bamboo Wood Red LED Material: Wood & Plastic Dimension: 15cm x 7.8cm x 7cm USB Cable length: 100cm Adaptor Input / Battery Type: USB power supply cable or 4pcs AAA Batteries (Batteries are not included) Adapter Output: DC 5V