Feature: 1. Microphone and Camera: Built in high sensitivity microphone, the recording effect is clear. Built in camera, AVI video format, continuous video 5 hours. 2. High Strength Metal Shell: The one piece metal shell has high strength anti drop, anti compression performance. Unique metal design, easy to operate. 3. Noise Reduction and Memory Card: Acoustic noise reduction, high definition sound quality. Support up to 32GB micro memory card (not included). 4. Sound and Video Recording Time: Built in lithium in battery 3.7V 300mAh. Sound recording time is about 4.5 hours. Video recording time: About 3.5 hours. 5. Video File Format: 480P resolution 640 x 480P mini camcorder. Compact and portable size. An useful gift for students, professor, teacher, businessman, anyone who loves to record. Specification: Item Type: Digital Voice Recorder Product Material: Plastic, Metal Color: As Pictures Shown Weight: Approx. 111g / 3.9oz Product Size: Approx. 66x28x10mm / 2.6x1.1x0.4in Battery Type: Built in Lithium Ion Battery 3.7V 300mAh (Shipped with Built in Battery) Sound Recording Time: About 4.5 Hours Video Recording Time: About 3.5 Hours Sound File Format: WAV 256Kbps Video File Format: AVI 640x480P Micro Memory Card: Support Expansion up to 4-32GB (Not Included) Working Temperature: -5-40℃. Package List: 1 x Mini Camera1 x Manual1 x Charging Cable