Features: brand new and high quality Capacity: 8GB, 16GB, can store audio, conference, learning materials. Recording format: MP3, WAM-WMA, WAV. Microphone: Built-In High-Quality Microphone. Recording Method: One-Key Recording and Saving, supports video shooting. for Ideal Gifts: Gifts for parents, friends, family, students, colleagues. Specifications: Recording Format: Wav Music-support Wma, Mp3, Wav Music Format Playback Recording Bit Rate: 192kbps Continuous Recording: 18 Hours Power Supply: 3.7v 200mah Headphone Playback Time: 15 Hours Battery Capacity: 200 Ma Material: Plastic Color: Black Product Dimension: approx. 6.3x1.2x2.5cm/2.48x0.47x0.98inches Net Weight: 126g/0.30lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1PC U Disk Keychain MP3 Voice Recorder