Note: Please allow some error due to manual measurement. Specification: Item Type: Digital Voice Recorder_x000D_Material: Zinc Alloy_x000D_Recording Format: WAV_x000D_Screen: 128x64 LCD_x000D_Built In Speaker: Approx. 18 x 26mm / 0.71 x 1.02in 8 1W_x000D_Battery Type: Built In 300mAh Lithium Battery_x000D_Recording Time: 24 Hours Features: 1PROFESSIONAL RECORDING QUALITY: Digital voice recorder has professional recording quality with WAV recording format to ensure clear and accurate recordings. 2SPEAKER FUNCTION: MP3 player recorder has a built in 18x26mm 8 1W speaker, allowing you to share sound content anywhere, anytime without the need for additional equipment. 3LONG CONTINUOUS RECORDING TIME: Smart voice recorder has a built in 300mAh Li ion battery, which can record continuously for up to 24 hours to meet the needs of long time recording. 4LIGHTWEIGHT AND PORTABLE: Voice activated recorder is made of zinc alloy, durable and lightweight, easy to carry. Ideal for lectures and conferences. 5EASY TO OPERATE: One touch recording and voice activated recording function, easy to use, even for users without professional recording experience. PackageList: 1 x Digital Voice Recorder 1 x Data Cable 1 x User Manual